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Installation guide for LISTSERV® 1.8d for VM

Copyright © L-Soft International, 1994-1999

Last update: 1 March 1999


 
   >>>  Do NOT receive any of the other files before reading this!  <<<
 
  This file  is the installation guide  for LISTSERV. You should  read it
  carefully before proceeding to install the server.
 
 
 
  Preface
 
 
 
  This manual is the installation guide for LISTSERV. It contains all the
  information  required  to  install  the  server,  along  with  detailed
  technical requirements.
 
 
  Conventions
  -----------
 
  The  following  typographical conventions have been made in this docu-
  ment to improve its readability:
 
| o   Recent changes in the publication are indicated by a vertical  bar
|     in the left margin.
 
! o   Intermediate  changes  between two releases of the document ("Pre-
!     releases") are flagged with  an  exclamation  point  in  the  left
!     margin.    Features described in this fashion should be considered
!     as not documented and not officially supported until the  exclama-
!     tion point is removed.
 
> o   Temporary   restrictions  or  circumventions  are  marked  with  a
>     "greater than" sign in the left margin. This sign may also be used
>     to signal obsolete features for which support will be  dropped  in
>     the next release.
 


|  Statement of Year 2000 Compliance for L-Soft's Products
|  -------------------------------------------------------
|
| Beginning with version 1.8d, LISTSERV will be Year 2000 Compliant under 
| all supported architectures except for VM, contingent on operating 
| system support for Year 2000.
|
| LISTSERV (and LMail) for VM will become Year 2000 Compliant when L-Soft 
| no longer has S/370 customers to support (which will happen in 1999, 
| given that the version of VM used on the S/370 platform is not Year 
| 2000 Compliant and the S/370 does not support XA).
|
| Beginning with version 1.1b, LSMTP will be Year 2000 Compliant under 
| all supported architectures.
 
 
  PRELIMINARIES
  _____________
 
 
  This section contains the non-proprietary components list and technical
  requirements  specifications.  It should  be  read  carefully prior  to
  proceeding to the installation of the LISTSERV software package.
 
 
 
  **************************
  * Technical requirements *
  **************************
 
 
 
 
  Hardware requirements
  ---------------------
 
 
  There is no particular hardware requirement, apart from those  implied
  by the software requirements hereunder.
 
 
 
  Operating system requirements
  -----------------------------
 
 
  LISTSERV  operates exclusively  in  VM/CMS  environments. There  exist,
  however, a  number of different  "flavours" of VM/CMS,  whose specifics
  will  be  covered  in  this  section. Note  that  the  information  and
  recommendations provided  hereunder have  been extracted  from comments
  and problem reports sent by the 100 most important LISTSERV sites. This
  information is provided  to help you decide whether or  not you can run
  LISTSERV on  your existing operating  system, and  if so, what  are the
  potential problems  you should be  aware of.  It applies solely  to the
  LISTSERV software, and  is not suitable to the evaluation  of any other
  product. It does  not necessarily reflect the opinion of  IBM, nor that
  of the publisher.
 
 
 
  CP requirements
 
 
  There are three "families" of VM operating systems:  VM/SP, VM/HPO and
  XA/ESA.  LISTSERV can operate under all three families, with different
  requirements and/or restrictions.
 
 
 
  VM/SP (CP)
 
 
  LISTSERV can  operate indifferently under VM/SP  CP Release 4, 5  or 6,
  and  with the  so-called "370  Feature"  of VM/ESA.  However, if  VM/SP
  Release 5 or above is used, an english message repository (either UCENG
  or AMENG) is required. Additional  facilities are provided when running
  under CP Release 5 or above.
 
  The  release  of  CP has no notable performance nor reliability impact
  under VM/SP (this is not necessarily true of the other  "flavours"  of
  VM), and there is therefore no "recommended" level.
 
 
 
  VM/SP HPO (CP)
 
 
  LISTSERV presently  supports VM/HPO CP  Release 4.0, 4.2, 5.0,  5.1 and
  6.0 (all five tested in production). However, if VM/SP HPO Release 5 or
  above  is installed,  an english  message repository  (either UCENG  or
  AMENG)  is required.  Additional facilities  are provided  when running
  under VM/HPO Release 5 or above.
 
  Important  note for HPO 5 sites:  Performance and/or reliability prob-
  lems have been experienced by a large number of customers when running
  LISTSERV under VM/HPO Release 5, due to corresponding  spooling  prob-
  lems  introduced  by HPO 5.  In addition to a very large list of spool
  APARs which cannot be reproduced  here,  APARs  VM28372,  VM29275  and
  VM30661 must imperatively be applied in order for LISTSERV to function
  properly under HPO 5.
 
 
 
  VM/XA and VM/ESA (CP)
 
 
  LISTSERV supports the CP component of all versions of VM/ESA, and VM/XA
  SP Release  2. VM/XA SP Release  1 is not supported.  All machine modes
  (370/XA/ESA/XC) are supported, but 370  mode is recommended for optimal
  performance due  to the longer path  lengths with XA/ESA/XC modes  in a
  number of key CMS system services.
 
 
  CMS requirements
 
 
  You  will probably have more than one version of CMS available for use
  on your system.  This section should help you to select the one  which
  is    best    suited    to   LISTSERV,   according   to   your   local
  migration/conversion policies.
 
| LISTSERV can  operate properly under all  versions of CMS from 4 to 12,
| and can operate properly  under CMS 13 if you  install IBM APAR VM61031
| (fix number UM28307).
 
  Generally speaking,  the higher the version  of CMS, the more  CPU time
  and  storage you  will need.  This  is because  the parts  of CMS  that
  LISTSERV is  using have been  getting generally slower and  bigger with
  each release, with  the exception of release 7 which  is more efficient
  than release 6. As a rule of thumb, you will get optimal performance by
  using the same  level of CMS for LISTSERV that  your users are normally
  IPL'ing. The most  notable exceptions relate to CMS 6  and early levels
  of CMS 5.5 - CMS 5 is then preferable even if LISTSERV is the only user
  of that system.
 
  Finally, it should be  noted  that  the  windowing  functions  of  CMS
  Release  5  are  not  supported  -- LISTSERV can only operate with SET
  FULLSCREEN OFF in effect.
 
 
  Other software requirements
  ---------------------------
 
 
  The following  software products are  required to operate  the LISTSERV
  software:
 
  o   For the NJE  version (the one normally sent to  BITNET sites), RSCS
      version 3,  version 2.3  or version 2.2  is required.  LISTSERV may
      operate with older versions but they are no longer supported.
 
  o   A "mailer", whose task is to deliver the mail messages generated by
      LISTSERV. The recommended product is LMail, available from the same
      author. The Crosswell/Princeton mailer  is also supported (R2.07 or
      higher). In  a non-BITNET environment,  the SMTP server  that comes
      with  version 2  of IBM's  TCP/IP  product can  also be  used as  a
      makeshift solution, but a full-fledged  mailer is required for full
      functionality. See section "Configuring the MAILER server" for more
      details on software requirements.
 
 
 
  Network datafiles requirements
  ------------------------------
 
 
  The  following data files are required to operate LISTSERV properly on
  BITNET/EARN:
 
  o   BITEARN NODES, the network Master Node File.  It can  be  obtained
      from any operational NETSERV or LISTSERV server.
 
  o   DOMAIN  NAMES, the list of all official gateways to other domains.
      It can be obtained from any NETSERV.
 
  Sites which are not connected to  BITNET/EARN  will  have  to  prepare
  sample  versions of these files as explained in section "Other custom-
  izable data files".
 
 
 
 
  ******************************
  * Non-proprietary components *
  ******************************
 
 
  The LISTSERV "base" software package contains  some  components  which
  are  not  under  the ownership of the LISTSERV copyright owner.  These
  components may be subjected to different conditions of use.    In  any
  case,  their authors have explicitly accepted to have them distributed
  along with the software package you have received.  Below is  a  short
  description  of  each  of these components, along with the address and
  phone number of someone who can be contacted if more accurate informa-
  tion is required.
 
 
 
  PDUTIL
  ------
 
 
  PDUTIL is no  longer shipped with LISTSERV. It may  still be present on
  LISTSERV's disk  in the  case of  old installations,  but is  no longer
  needed. As  far as LISTSERV itself  is concerned, it can  be removed if
  found on any of LISTSERV's disks.
 
  CARD
  ----
 
 
  CARD  is  a  CMS utility similar to the IBM standard DISK command, but
  much more efficient.  It appears in the LISTSERV  shipment  under  the
  name  of  CARD MODULE.  It is used to implement the Card file transfer
  format and is invoked from  various  "system"  modules  like  LSVSENDF
  EXEC.   It may not be removed from the LISTSERV disk without having to
  modify some of these modules.
 
  The following copyright instructions have been  copied  verbatim  from
  the CARD ASSEMBLE file:
 
    This source is in the PUBLIC DOMAIN. It may be freely redistributed,
    however, the full source (this file and associated updates) must be
    made available upon request by any you redistrubute executables to.
    No promices of the usefulness, correct operation, fixes
    (etc, etc, et c) are made.
 
  Problem  reports  and  requests  for information should be sent to the
  authors at the following address:
 
            Systems Programing
            Cornell Computer Services
            Cornell University
            315 Computing and Communications Center
            Garden Ave.
            Ithaca, N.Y. 14853
            USA
 
 
 
 
 
  INSTALLATION
  ____________
 
 
  This  section decribes  the installation  of the  LISTSERV package.  It
  contains instructions about setting up the LISTSERV virtual machine and
  downloading the software material from the installation tape or network
  installation shipment.
 
 
 
 
  ******************
  * Shipment files *
  ******************
 
 
 
 
  Installation tape
  -----------------
 
 
  This section is relevant only to software recipients who have  ordered
  an  installation  tape.   Recipients of a network installation package
  should skip to the next section.
 
  Your installation tape will contain the following set of files, in CMS
  TAPE format, with one tape mark separating each set of files from  the
  next one:
 
  o   A set of installation instructions files:
 
      LISTINST MEMO            This  is  a computer readable copy of the
                               document you are reading now.
 
      LISTCPRT MEMO            This file is an exerpt from LISTINST MEMO
                               containing     only     the     copyright
                               instructions.
 
      LISTSERV DIRECT          This  is a sample directory entry for the
                               LISTSERV virtual machine.
 
  o   A set of basic installation files, containing all the program  and
      data files required to operate the software with a minimum config-
      uration.
 
  o   An  optional set of source files, to which a dummy file is substi-
      tuted if you did not request source files  when  filling  in  your
      order.
 
 
 
  Network installation package
  ----------------------------
 
 
  This section is relevant only to software recipients who have  ordered
  a  network  installation package.   Recipients of an installation tape
  should skip to the next section.
 
  Your installation package will contain the following set of files:
 
  LISTPRES MEMO            This is  a  copy  of  the  Revised  LISTSERV:
                           BITNET-Oriented  Presentation guide, document
                           number P01-009.
 
  LISTINST MEMO            This is the file you are reading now.
 
  LISTCPRT MEMO            This file is an  exerpt  from  LISTINST  MEMO
                           containing only the copyright instructions.
 
  LISTSERV DIRECT          This  is  a  sample  directory  entry for the
                           LISTSERV virtual machine.
 
  $LISTSRV NAMES           This is a sample PEERS NAMES entry which  you
                           must  fill  in  and return to the author upon
                           completion of the installation process.
 
  INITIAL SHIPMENT         This is a  set  of  installation-customizable
                           files  which  are  sent  only  once  to  each
                           installation to avoid  overlaying  previously
                           configured  files.  It contains several files
                           batched in a single DISK DUMP reader file.
 
  VERSVVVV N-OF-M          These files contain all the program and  data
                           files comprising the LISTSERV software.  Each
                           of  these  files  has  been kept smaller than
                           3000 records for network efficiency  reasons.
                           They  contain  several  files  batched  in  a
                           single CARD DUMP  reader  file,  and  can  be
                           received  by means of the CARD MODULE program
                           included in the INITIAL SHIPMENT file.
 
  ASMVVVV N-OF-M           These files contain optional source files for
                           the  assembler  language  components  of  the
                           LISTSERV  software.   Each of these files has
                           been  kept  smaller  than  3000  records  for
                           network  efficiency  reasons.    They contain
                           several files batched in a single  CARD  DUMP
                           reader file.
 
 
 
  Installation overview
  ---------------------
 
 
  The installation process can be divided into four steps:
 
  o   Creating the LISTSERV virtual machine.
 
  o   Downloading the shipment files.
 
  o   Customizing the configuration files.
 
  o   Verifying the installation.
 
  The  first  two steps will be covered in this section.  The third step
  is described under the heading "Customization", whilst the  last  step
  is discussed in "Starting the server to verify the installation".
 
 
 
 
  *****************************************
  * Creating the LISTSERV virtual machine *
  *****************************************
 
 
  The  suggested  configuration  for the LISTSERV virtual machine is the
  following:
 
  +--------------------------------------------------------------------+
  |                                                                    |
  | USER LISTSERV password 5M 16M BDG                                  |
  |  ACCOUNT SYSTEM NETWORK                                            |
  |  IPL CMS                                                           |
  |  CONSOLE 009 3215                                                  |
  |  SPOOL 00C 2540 READER                                             |
  |  SPOOL 00D 2540 PUNCH                                              |
  |  SPOOL 00E 1403 A                                                  |
  |  LINK MAINT 190 190 RR                                             |
  |  LINK MAINT 19E 19E RR                                             |
  |  LINK MAILER 191 xxx RR                                            |
  |  LINK BITNET 191 xxx RR                                            |
  |  MDISK 191 dtype start1 cyl1 volid MR                              |
  |  MDISK 192 dtype T-DISK cyl2                                       |
  |                                                                    |
  | Figure 1.  Sample directory entry for the LISTSERV virtual machine |
  +--------------------------------------------------------------------+
 
  The various definitions of this virtual machine are discussed below:
 
  USERID         It is recommended that you used a  userid  of  LISTSERV
                 for  the  LISTSERV virtual machine.   However, LISTSERV
                 can operate normally under any userid as  long  as  the
                 other  LISTSERV servers are informed of this unexpected
                 userid.  By default, all LISTSERV servers  will  assume
                 that  a  virtual machine with a userid of LISTSERV is a
                 LISTSERV server and is authorized to issue inter-server
                 control commands.
 
  STORAGE        The minimum recommended storage size  for  LISTSERV  is
                 five  megabytes, as a lot of EXEC files are EXECLOAD-ed
                 and  an  important  amount  of  datafile information is
                 cached in storage for better performance.
 
  PRIVILEGES     LISTSERV requires privilege class  D  for  distribution
                 list  and  spool  monitoring functions (See the "OFFLI-
                 NETHR" variable in LOCAL SYSVARS.) to operate properly.
                 It is also recommended that MSGNOH privilege be granted
                 to it, either through  a  special  installation-defined
                 privilege class or through the use of "standard" privi-
                 lege  class B.   This is the only reason why class B is
                 shown in the sample directory entry; LISTSERV does  not
                 use any class B command other than MSGNOH.
 
                 If  not endowed with MSGNOH capability, the server will
                 use the special CP TO command if  it  is  available  at
                 your  installation,  or will send the message via RSCS.
                 If all of this fails, a normal CP MSG command  will  be
                 used to make sure that the message is delivered.
 
                 A  home-made privilege class can be substituted to this
                 as long  as  it  includes  the  class  D  QUERY  FILES,
                 TRANSFER  and  CHANGE  commands,  and,  optionally, the
                 MSGNOH command.
 
  IPL            LISTSERV must  IPL  a  CMS  system  located  above  its
                 virtual storage size.
 
  LINKS          Incomplete LINK directory statements have been included
                 for the two following disks:
 
                 o   MAILER  191,  which  is  supposed  to  contain  the
                     required DOMAIN NAMES file.
 
                 o   BITNET  191,  which  is  supposed  to  contain  the
                     required BITEARN NODES file.
 
                 None of these two userids have to be created if they do
                 not already exist.  You should make sure, however, that
                 LISTSERV is granted  R/O  access  to  the  three  files
                 mentioned  above.  It is your responsibility to provide
                 the necessary ACCESS statements in the server's PROFILE
                 EXEC, or to install/create the files  on  the  server's
                 191 minidisk.  Non BITNET/EARN recipients should remove
                 these  LINK  statements  as  they  will  have to create
                 samples of these three files on the LISTSERV 191  mini-
                 disk   anyway,   as   explained   in   section   "Other
                 customizable data files".
 
  MINIDISKS      Two minidisks are required for LISTSERV:
 
                 o   The 191 minidisk is used to store the LISTSERV code
                     and data files.  The recommended size  is  approxi-
                     mately  ten   megabytes,  allowing  for  a "normal"
                     amount of lists and entries in the signup file. The
                     source code should be placed on a separate minidisk
                     (which can be owned by a "maintainer" account).
 
                 o   The  192  minidisk  is  a  work  disk  which can be
                     defined either as a T-DISK or as a normal permanent
                     disk.  In the latter case, it should  be  formatted
                     with the BLKSIZE 4k option.  About two megabytes of
                     disk  space  should be allocated for the work disk.
 
                 You  might want to define additional disks for your own
                 use if you plan to make an extensive use  of  the  file
                 server functions of LISTSERV.
 
                 You  should  note  that  in any case, LISTSERV will not
                 automatically access any disk other than  its  191  and
                 192 minidisks.
 
  Once you  have created the LISTSERV  virtual machine, you must  LINK to
  its 191 minidisk  in R/W mode and format it  before proceeding with the
  installation.
 
 
 
 
  *************************
  * Downloading the files *
  *************************
 
 
  Before  starting  to  download  the  files  you must have obtained R/W
  access to the LISTSERV 191 minidisk and formatted it if required.   It
  must be accessed as your A-disk.
 
 
 
  Downloading from installation tape
  ----------------------------------
 
 
  You  must  first  attach the tape drive to yourself at virtual address
  181, before issuing the following commands:
 
      TAPE REW           (rewinds the tape)
 
      TAPE FSF           (skips the installation instructions files)
 
      TAPE LOAD          (loads the basic material)
 
  The tape is then positioned on the beginning of the  assembler  source
  files,  which  can  then be loaded if desired.  You might also wish to
  load them on a separate disk.  The same applies to the  SCRIPT  source
  files which follow the assembler sources files.
 
 
 
  Downloading from installation shipment
  --------------------------------------
 
 
  YOU MUST NOT USE RDRLIST TO RECEIVE THE FILES.
 
  Instead,  you  must use the CP QUERY READER ALL * command to determine
  which files are in your reader, and what are their spoolids.  You must
  then issue a CP ORDER READER spoolid  command  to  place  the  INITIAL
  SHIPMENT  file  on  top  of  your  reader,  and then issue a DISK LOAD
  command to receive its contents on the LISTSERV 191 minidisk.
 
  Once the INITIAL SHIPMENT file has been loaded, you  must  proceed  to
  install  all  the VERSvvvv n-OF-m files, in any order, using (for each
  file) a CP ORDER READER spoolid followed by a CARD LOAD command.
 
  You can  then install  the ASMvvvv  n-OF-m files  on whatever  disk you
  might want, using the same procedure. The only file in DISK DUMP format
  is INITIAL SHIPMENT.
 
 
 
 
 
  CUSTOMIZATION
  _____________
 
 
  This section discusses the tailoring  and customization of the LISTSERV
  software. It explains  how to modify the  various user-tailorable exits
  and  control files  to suit  your installation's  needs, and  should be
  reviewed before starting the program.
 
 
 
 
  ******************************
  * User-tailorable EXEC files *
  ******************************
 
 
  This  section  describes  the  EXEC files that must be tailored by the
  installation.
 
 
 
  PROFILE EXEC
  ------------
 
 
  You must modify the default supplied PROFILE EXEC file to include  the
  following:
 
  o   LINK  and/or ACCESS commands for all the LISTSERV disks except the
      191 and 192 minidisks which are automatically accessed.   Notably,
      you  must  provide  LISTSERV   with  R/O  access  to BITEARN NODES
      and DOMAIN NAMES.
 
      You can use any free minidisk address on a  LINK  command,  except
      5FF  which is reserved for LISTSERV's use.  Similarly, you can use
      any free disk mode  on  an  ACCESS  command,  except  Z  which  is
      reserved  for  LISTSERV's use.  It is, however, recommended not to
      access any disk under a filemode of B or C.
 
  o   You may add additional commands  (e.g.  PF-keys  definitions)  for
      your convenience.  You should note, however, that console spooling
      commands should not be placed in PROFILE EXEC but in LSV$CCNS EXEC
      (see below).
 
 
 
  LSV$CCNS EXEC
  -------------
 
 
 
  This  exec  is a user-tailorable exit that is called by LISTSERV when-
  ever it wants to change the status of the  console  spooling  options.
  You should review it and modify it to suit your needs.  It is self-do-
  cumented and the various options are therefore not detailed here.
 
 
 
  LSV$INST EXEC
  -------------
 
 
  This exec is a user-tailorable exit  that is called whenever an INSTALL
  command with the  AUTO=YES option has been received.  You should review
  it  and  modify it  to  fit  your  installation's requirements.  It  is
  self-documented  and the  various  options are  therefore not  detailed
  here.
 
 
  LSV$PW EXEC
  -----------
 
 
  This customizable exit is called whenever a PW ADD command  (refer  to
  the  "Revised  LISTSERV:  File  Server  Functions"  -  document number
  U01-006 - for more details on the PW command) is received by LISTSERV.
  It must decide whether the command is to  be  accepted,  rejected,  or
  forwarded  to  the LISTSERV operation staff for their approval.  It is
  self-documenting and should be  reviewed  and  modified  to  fit  your
  installation's policy.
 
  Note  that  the  LSV$PW  is bypassed when the PW ADD commands emanates
  from a LISTSERV maintainer ("postmaster") or  from  a  member  of  the
  LISTSERV  Coordination  Board.    This  ensures that these persons are
  always able to obtain a LISTSERV password.
 
 
 
 
  ***************************************
  * Tailoring LISTSERV System Variables *
  ***************************************
 
 
  LISTSERV uses a number  of  system  variables  which  control  several
  configurable  aspects of the software.  These variables are defined in
  the various SYSVARS files  on  LISTSERV's  191  minidisk.    The  file
  SYSVARS  FILE contains a list of all the SYSVARS files which are to be
  processed at initialization, in the order in which they will be  exam-
  ined.
 
      LISTSERV  SYSVARS  contains  declarations  which are intrinsically
      global to all LISTSERV implementations and should not  be  altered
      by the installation.
 
      BITEARN  SYSVARS  contains  declarations  which  are global to all
      BITNET/EARN installations.  Most of these  declarations  are  also
      required  for  non  BITNET/EARN  sites,  but  might  be assigned a
      different value.  In any case, these values may  be  overriden  by
      means of the LOCAL SYSVARS file (see below).
 
      LOCAL  SYSVARS  contains  variable  definitions which are local to
      each installation.   It  is  this  file  that  you  will  have  to
      customize.
 
      BITEARN2  SYSVARS contains statements to check out the consistency
      of the previous declarations and to try to avoid  problems  caused
      by  incorrect specifications in the previous SYSVARS files.  It is
      only relevant to BITEARN/EARN sites.
 
  As each SYSVARS file is processed,  new  variables  are  assigned  and
  possibly overlay previously defined values.  The LOCAL SYSVARS file is
  processed  after  all the standard definition files, and can therefore
  be used to override default settings.   BITEARN2 SYSVARS  subsequently
  receives  control  and  performs some verifications to ensure that the
  values specified in LOCAL SYSVARS are consistent and  will  not  cause
  any problem at execution time.
 
  Some  of the optional LISTSERV sub-packages (e.g. the "LMON" RSCS line
  monitor subsystem) have their own SYSVARS file which must be  inserted
  in  SYSVARS FILE in the course of the sub-package installation.  These
  are documented in the corresponding sub-package installation guide.
 
  The various SYSVARS files are self-documented and should  be  referred
  to for more information.
 
 
 
  Special considerations for non BITNET/EARN sites
  ------------------------------------------------
 
 
  Non  BITNET/EARN  sites  might  need  to modify some of the statements
  contained in BITEARN SYSVARS and BITEARN2 SYSVARS.  In particular, the
  LMC and LCOORD variables should  be  modified.    These  modifications
  should  take  place  preferrably  in  the  LOCAL  SYSVARS files, which
  receives control after BITEARN SYSVARS.
 
  The LMC variable defines the RFC822 addresses of the  LISTSERV  Master
  Coordinator,  i.e.  the person in charge of the management of LISTSERV
  in BITNET/EARN.  It is associated with the LMC File Access Code  which
  owns  the  various  network-wide configuration files of LISTSERV.  You
  should set it to the userid@node of the person who will coordinate the
  LISTSERV network in your institution.   If you do  not  have  a  local
  network,  it  should  be set to be the same as the LISTSERV operations
  staff, i.e. the declaration would be as follows:
 
                              LMC = postmaster
 
  The LCOORD variable defines the RFC822  addresses of the members of the
  LISTSERV Coordination Board, i.e. the  persons in charge of the coordi-
  nation  of LISTSERV  in  BITNET/EARN.  It corresponds  to  the list  of
  persons to be notified of problems  which might affect the operation of
  the  LISTSERV network.  These persons  are also  authorized to  use the
  FILEVERS  command  to check  the  installation  status of  the  various
  servers in  the network. You  should set it  to the userid@node  of the
  persons who will  monitor the LISTSERV network in  your institution. If
  you do not have a local network, it should be set to be the same as the
  LISTSERV operations staff, i.e. the declaration would be as follows:
 
                            LCOORD = postmaster
 
 
 
  Special considerations for local modifications
  ----------------------------------------------
 
 
  New system variables can be defined in the LOCAL SYSVARS files for use
  in locally developped commands.  This does not require  any  modifica-
  tion  to  the  LISTSERV code, as the list of system variables is built
  dynamically from the contents of the various SYSVARS files.
 
  These variables can then be retrieved by means of  a  "GLOBALV  SELECT
  LISTSERV  GET  varname" command.  However, care should be taken not to
  use names that might  receive  an  "official"  meaning  in  subsequent
  releases  of  the  program.    It  has been decided that no "official"
  system variable would start with an  underscore  ('_').    You  should
  therefore  avoid defining new system variables which do not start with
  an underscore.
 
  To facilitate the definition of complex  configuration  parameters  in
  SYSVARS  files  associated  with  optional  sub-packages,  it has been
  decided that any variable starting with a dollar sign ('$')  would  be
  considered  to  be  a  scratch  variable, local to the SYSVARS file in
  which they have been defined.  These scratch variables are  not  saved
  to GLOBALV storage, and can only be used to build up other (permanent)
  variables in the same SYSVARS file.
 
 
 
 
  ***********************************
  * Configuring the MAILER software *
  ***********************************
 
 
  This chapter contains configuration specifics for the "mailer" agent to
  be  used in  conjunction with  LISTSERV, and  explains how  to set  the
  NDMAIL variable in  LOCAL SYSVARS, which tells LISTSERV  whether to use
  PUNCH or Netdata  format when talking to the mailer.  Regardless of its
  setting, LISTSERV always accepts both formats as input.
 
  LMail
  -----
 
  The LMail  installation guide  contains configuration  instructions for
  the use  of LMail  in conjunction  with LISTSERV.  Just search  for the
  string "LISTSERV" in the various MEMO  files. With LMail you should set
  the NDMAIL variable to 1 in LISTSERV's LOCAL SYSVARS file.
 
 
  XMAILER
  -------
 
  The use of the Crosswell/Princeton mailer (XMAILER) is not recommended.
  At any rate,  only versions R2.07 and higher are  supported. When using
  XMAILER,  the MAILER  MTPLATE  file  must be  modified  to include  the
  LISTSERV  virtual  machine  in  the  list  of  "trusted"  origins.  The
  INCOMING: table would be modified as follows:
 
  +--------------------------------------------------------------------+
  |                                                                    |
  | INCOMING:                                                          |
  | ; Node    Userid    Exit                                           |
  | ;-------  --------  ---------                                      |
  | %incoming                                                          |
  | BLUELAKE  LISTSERV                                                 |
  | *DEFAULT* *DEFAULT* RSCSVER   ; standard RSCS tag checking         |
  | END INCOMING                                                       |
  |                                                                    |
  | Figure 2.  Modifying the MAILER MTPLATE file:  This figure assumes |
  |            that the userid of  the  LISTSERV  virtual  machine  is |
  |            "LISTSERV" and that your nodeid is "BLUELAKE".          |
  +--------------------------------------------------------------------+
 
  You  must then issue a MG MAILER command to rebuild the MAILER PROFILE
  file and restart your mailer.
 
  With XMAILER version R2.10 and higher, set NDMAIL to 1, otherwise to 0.
 
  SMTP
  ----
 
  The use of SMTP in conjunction with LISTSERV is discouraged if you have
  a local  NJE network.  At any  rate you are  advised to  install LMail,
  which can communicate with both SMTP and other mailers of various types
  (and of  course LISTSERV) in  order to provide optimal  usability. With
  SMTP, you set NDMAIL to 1.
 
 
 
  *********************************
  * Other customizable data files *
  *********************************
 
 
  This chapter gives a brief description of the  remaining  customizable
  datafiles used by LISTSERV.
 
 
 
  WAKEPARM FILE
  -------------
 
 
  LISTSERV  is  able  to perform pre-defined tasks at scheduled dates or
  times.  These tasks are called events and are defined in a file called
  WAKEPARM FILE.  This file must have a logical record length of 80  and
  fixed-length records, and must reside on the LISTSERV 191 minidisk.  A
  sample WAKEPARM FILE is shipped with the LISTSERV code:
 
  +--------------------------------------------------------------------+
  |                                                                    |
  | *                                                                  |
  | * This WAKEUP parms file is the new default for                    |
  | * LISTSERV version 1.5j and above.                                 |
  | *                                                                  |
  | MON      06:00:00 06/15/87 EXEC LSVEXPIR                           |
  | ALL      10:00:00 06/16/87 Call LSVCHK   'Database1'               |
  | ALL      12:00:00 06/16/87 EXEC LSVCLGBV LASTING                   |
  | ALL      18:00:00 06/16/87 CMS  EXECMAP                            |
  | ALL      22:00:00 06/15/87 Call LSVXAFD  'Delayed AFD/FUI'         |
  | ALL      23:59:00 06/14/87 EXEC LSV$CCNS CLOSE                     |
  | ALL      02:00:00 06/16/87 Call LSVXAFD  'Delayed AFD/FUI'         |
  |                                                                    |
  | Figure 5.  Sample WAKEPARM FILE                                    |
  +--------------------------------------------------------------------+
 
  Blanks lines and lines starting with an asterisk are ignored.  All the
  other lines define an event and its scheduled date and  time,  in  the
  following format:
 
  1.  Column  1:    days when the event must be executed.  This can take
      any of the following forms:
 
      ALL            Indicates that the event  must  be  executed  every
                     day.
 
      MON, TUE...    Indicates  that  the  event  must be executed every
                     monday, tuesday, etc.
 
      M-F            Indicates that the event  must  be  executed  every
                     working day (i.e. from monday to friday).
 
      S-S            Indicates  that  the  event  must be executed every
                     weekend day (i.e. on saturdays and sundays).
 
      WEEKDAY        Is a synonym of M-F.
 
      WEEKEND        Is a synonym of S-S.
 
      MM/DD/YY       Is the exact date when the event is  to  be  sched-
                     uled.    Double  equal  signs ('==') can be used as
                     wildcard characters in the month, day or year spec-
                     ification.   Thus, ==/10/== means  that  the  event
                     must  take  place  on the tenth day of every month,
                     while ==/==/== is functionally identical to ALL.
 
  2.  Column 10:
 
      o   Time at which the event must be executed, if it is  a  "fixed-
          schedule" event (see below).  This must be in hh:mm:ss format.
 
      o   Events  can also be scheduled to be executed at regular inter-
          vals of time, rather than at pre-defined time  specifications.
          In  that case, "&hh:mm" must be entered in column 10 to define
          the interval of time after which the event is  to  be  re-exe-
          cuted.
 
  3.  Column  19:    date  or  time (for "interval" events) at which the
      event was last executed.  This field is maintained by LISTSERV and
      should be left unchanged, with new entries  being  initialized  to
      00/00/00  for "fixed-schedule" events, and 00:00:00 for "interval"
      events.
 
  4.  Column 28:  description of the event.   The first  word  indicates
      the nature of the event:
 
      CMD       Indicates  that  the specified LISTSERV command is to be
                executed under the authority  of  the  LISTSERV  virtual
                machine,  i.e.  as  if the command had been entered from
                the LISTSERV console.
 
      CMS       Indicates that the command must be passed to CMS as  per
                the REXX Address CMS command.
 
      COMMAND   Is a synonym for CMD.
 
      CP        Indicates  that the command must be passed to CP without
                being translated to uppercase.
 
      EXEC      Indicates that the  specified  EXEC  is  to  be  invoked
                without the argument list being translated to uppercase.
 
      REXX      Directs  LISTSERV  to  process the command as per a REXX
                Interpret command.
 
      Each of these event descriptions may optionally be prefixed with a
      QUIET keyword, indicating that the event should not be  traced  on
      the  console log (i.e. it suppressed the message "Executing WAKEUP
      event:").  This is very useful for "interval" events which are  to
      be executed hundreds of time every day.
 
  You  might  want to add new events to the file or change the date/time
  of existing ones, at your convenience.   However,  it  is  recommended
  that  you did not altogether remove any of the standard event from the
  file.
 
 
 
  DOMAIN NAMES
  -------------
 
 
  This section is irrelevant to BITNET/EARN sites, which should use  the
  default DOMAIN NAMES file supplied by the BITNET coordination.
 
  The  DOMAIN  NAMES file defines the various network domains accessible
  from the local NJE network, along with the NJE addresses of the corre-
  sponding gateways.  It is used mainly by the DISTRIBUTE command (refer
  to the "Revised LISTSERV: Application  Programmer's  guide",  document
  number  A01-004,  for  a  description of the DISTRIBUTE command) which
  must be able to determine the nearest NJE node to any given domain.
 
  +--------------------------------------------------------------------+
  |                                                                    |
  | :nick..Atlantis          :mailer.MAELSTRM@OCEAN                    |
  | :nick..HADES.Olympus     :mailer.FURNACE@HELL                      |
  | :nick..Olympus           :mailer.RAINBOW@EARTH                     |
  |                                                                    |
  | Figure 6.  Sample DOMAIN NAMES file                                |
  +--------------------------------------------------------------------+
 
  DOMAIN NAMES is a NAMES-format file of which LISTSERV  recognizes  and
  uses only two tags:
 
  :NICK     This  tag  defines  the  name of the domain.  Its value must
            start with a period and can be either  a  top  domain  or  a
            sub-domain,  with  no  limit  on  the number of intermediate
            sub-domains.  For example, both .ARPA and  .host1.host2.ARPA
            are valid domain names.
 
            Note  that  it  is  perfectly  valid  to specify a different
            gateway for a top domain and one of its sub-domains,  as  is
            shown in Figure 6.
 
  :MAILER   This  tag  defines  the  userid@node  of  the gateway to the
            domain.  It must be directly accessible via the NJE  network
            to which LISTSERV is connected (or on the local machine).
 
 
 
  XMAILER NAMES
  -------------
 
 
  XMAILER NAMES is no longer required  by LISTSERV. This section has been
  deleted.
 
 
  BITEARN NODES
  -------------
 
 
  This  section is irrelevant to BITNET/EARN sites, which should use the
  default BITEARN NODES file supplied by the EARN coordination.
 
  The BITEARN NODES file defines  various parameters associated with each
  node of  the local  NJE network.  It is  extensively used  by LISTSERV,
  which uses  it to build  several data  files such as  BITEARN LINKSUM2.
  However, only a subset of the original tags from BITEARN NODES is used.
  No  attempt  will be  made  at  describing  the  other tags  which  are
  irrelevant to non  BITNET/EARN sites. The details of the  format of the
  BITEARN NODES file are described in a document called NEWTAGS DESCRIPT,
  which is maintained by a third party and available upon request.
 
  +--------------------------------------------------------------------+
  |                                                                    |
  | :node.VERS9710 :nodedesc.Special version entry                     |
  |      :connect.19930301 :country.SE :lastup.ADD 19990131            |
  |      :ref.GRENDALE                                                 |
  |                                                                    |
  | :node.BLUELAKE :links1.FOREST :ref.GRENDALE                        |
  |      :p_naiad.Naiad Lokiniram;NAIAD@BLUELAKE;36-15-33-33           |
  |      :country.US :fformat.PU :msgs.Y :connect.19930301             |
  |      :servers1.PISCES@BLUELAKE(MAIL,PU,M,BSMTP) :admin.p_naiad     |
  |                                                                    |
  | :node.FOREST :links1.GRENDALE BLUELAKE :ref.GRENDALE               |
  |      :country.US :msgs.N :connect.19930301                         |
  |                                                                    |
  | :node.GRENDALE :links1.GRENTREE FOREST :connect.19930301           |
  |      :servers1.PIGEON@GRENDALE(MAIL,ND PU,M,BSMTP)                 |
  |      :p_wizard.Him who Knoweth;WIZARD@GRENDALE;43-72-67-98         |
  |      :country.US :fformat.ND :fclass.G :msgs.Y :admin.p_wizard     |
  |      :member.The green dale :dir.p_wizard :ref.GRENDALE            |
  |                                                                    |
  | :node.GRENTREE :links1.GRENDALE :connect.19930301                  |
  |      :p_ilopan.Dryad Ilopan;DRYAD@GRENTREE;36-15-69-00             |
  |      :country.US :fclass.T :msgs.Y :admin.p_ilopan :ref.GRENDALE   |
  |      :servers1.PIGEON@GRENDALE(MAIL,ND PU,M,BSMTP)                 |
  |                                                                    |
  | Figure 8.  Sample BITEARN NODES file                               |
  +--------------------------------------------------------------------+
 
  IMPORTANT: with  the exception of  the first, or "version",  entry, all
  entries must be sorted in ascending  order by the value of the ':node.'
  tag.
 
  VERSION ENTRY:  the first entry in  the file should be  copied "as is".
  The only field you should change  is ':ref.', which should point to any
  of the other nodes  you define in the file (the  value is immaterial as
  long as the node in question is defined). You can also change the value
  of the ':node.' field,  as long as it starts with  'VERS' followed by a
  2-digit year number and a 2-digit number from 00 to 99 (the length must
  be exactly 8 bytes).
 
  The format of BITEARN NODES is very similar to the IBM  NAMES  format,
  with the :nick tag being replaced by :node.  LISTSERV presently recog-
  nizes only the following tags:
 
  :NODE          This  tag  defines  the  name  of the node to which the
                 entry applies.  It must be entered exclusively in upper
                 case characters.
 
  :CONNECT       This must contain a valid date, in the form yyyymmdd.
 
  :LINKS1        Lists all the adjacent nodes.  Any number of nodes  may
                 be  specified in this tag, separated from each other by
                 a single blank.   More nodes can  be  entered  under  a
                 tagname of :links2, etc.
 
  :ADMIN         Defines a list of "system administrators". For each name
                 you specify in the :admin tag, you must provide a :P_xxx
                 tag defining the name and userid of that person.
 
  :DIR           Similar to :admin, but defines  a "site director" rather
                 than a technical administrator. You can specify the same
                 value as  for :admin -  LISTSERV does not use  this tag,
                 but its presence in the file is required.
 
  :P_xxx         Defines  the name,  userid@node and  phone number  of an
                 administrator, in the following format:
 
                         full name;userid@node;phone number
 
  :COUNTRY       Defines the country (ISO country  code)  in  which  the
                 node is physically located.
 
  :FCLASS        Defines the preferred file class for the node, i.e. the
                 default class in which files should be sent to users of
                 this  node.  This must be a single character in the A-Z
                 or 0-9 range.  The default value is A.
 
  :FFORMAT       Defines the preferred file format for the node, i.e. the
                 default format in which files should be sent to users of
                 this node. The possible values are ND for Netdata and PU
                 for PUNCH. The default is ND (Netdata).
 
  :SERVERS1      Defines the userid@node of  the mailer serving the node,
                 if any. The format is a bit cryptic:
 
                       :servers1.userid@node(MAIL,format,M,BSMTP)
 
                 The 'userid@node'  part must be  on the local  system or
                 reachable via NJE - not  an Internet address. The format
                 should  be  'ND  PU'  (without the  quotes)  for  LMail,
                 FAL/SMTP, or XMAILER version  R2.10 or higher. For older
                 versions of XMAILER, specify only 'PU'.
 
  :MSGS          Must be  Y or N. Indicates  whether the node is  able to
                 receive interactive  messages or  not. You should  use Y
                 for VM systems  and VMS systems running JNET,  but N may
                 be appropriate for MVS systems.
 
  :MEMBER        This tag is required in at least one of the entries. The
                 contents are  a short free-form description  of the site
                 in question. You can then  use the nodeid containing the
                 :member tag to refer optional administrative definitions
                 via  the  :ref tag.  In  our  example, GRENDALE  is  the
                 "member"  node and  tags  such as  :dir  and :admin  are
                 referred (inherited) by all the other nodes.
 
  :REF           This  tag establishes  a tree  structure, referring  the
                 current node  to a higher-order node  which it "belongs"
                 to. For  instance, you could  define one major  node for
                 each physical plant and refer all the tags in this plant
                 to  their major  node. The  higher-level nodes  refer to
                 themselves. This  tag is mandatory,  even if you  have a
                 simple, flat structure; in that case, just refer all the
                 nodes to themselves.
 
  Referred tags:  among the tags  listed above, only the  so-called "role
  tags" (:admin, :dir and :p_xxxx)  are inherited via the :ref mechanism.
  The "technical tags"  such as :fformat and :servers1  must be specified
  in each entry.
 
  OPERATING THE SERVER
  ____________________
 
 
  This section describes the startup and shutdown procedures  for  LIST-
  SERV.    It  is not intended to be a reference document (more detailed
  information on this subject can be  found  in  the  Revised  LISTSERV:
  Maintenance  Guide,  document  number  S01-005),  but should rather be
  considered as a quick specific guide for  post-installation  verifica-
  tion procedures.
 
 
 
 
  **************************************************
  * Starting the server to verify the installation *
  **************************************************
 
 
  Now  that the software has been installed, you should start the server
  to have it verify the consistency of  the  various  program  and  data
  files it has been provided with.
 
  To  do  that, you must first release and detach the LISTSERV 191 mini-
  disk if you had previously obtained R/W access to it.  You should then
  logon to the LISTSERV userid, and let the  PROFILE  EXEC  run  to  its
  completion.    At this point, you should issue a QUERY DISK command to
  check that both the 191 and 192 minidisks have been  accessed  in  R/W
  mode.   If this is not the case, take the appropriate steps to correct
  the problem.
 
 
 
  First session (in test mode)
  ----------------------------
 
 
  To start the server, you must execute the  LSVPROF  program.    It  is
  normally invoked automatically from the PROFILE if LISTSERV is started
  in disconnected mode (e.g. by means of an AUTOLOG command).
 
  ----------------------------------------------------------------------
 
     LSVPROF
    6 Jul 1993 17:56:32 LISTSERV version 1.7f starting...
    6 Jul 1993 17:56:32  Copyright L-Soft international 1986-1993
    6 Jul 1993 17:56:32 PASCAL code loaded at 3F9000 - size 503k
    6 Jul 1993 17:56:32 Disk A(191)  is 51% full.
    6 Jul 1993 17:56:35 SIGNUP2 file is being compressed...
    6 Jul 1993 17:56:35 -> No entry removed.
    6 Jul 1993 17:56:36 Start: (WARM | COLD)  | SHUTDOWN | View
     cold p
    6 Jul 1993 17:56:36 Initialization complete.
     test
    6 Jul 1993 17:56:45 From LISTSERV@SEARN: test
    * Unknown command - "TEST". Try HELP.
     stop
    6 Jul 1993 17:56:51 From LISTSERV@SEARN: test
    * STOP command accepted, returning to CMS.
    Ready; T=1.87/2.33 17:56:52
 
    Figure 9.  Sample LISTSERV session
  ----------------------------------------------------------------------
 
  At that point, LISTSERV may  execute a migration procedure. A migration
  procedure is a program that receives  control whenever a new release of
  the   software  is   installed.  It   automatically  performs   several
  post-installation steps to ensure that  everything is in order. It will
  normally display a number of  information messages during this process,
  and possibly some warning or error messages if a problem occured during
  the "migration process".
 
  If the migration  process completed successfully, you  will be prompted
  for the type of  startup that you want to take.  You should answer COLD
  POSTPONE (which can be abbreviated to COLD P) to this prompt. This will
  direct LISTSERV to discard any warm data that might have been left from
  a  previous session,  and to  postpone the  processing of  reader files
  until the next session.
 
  NOTE: You might be asked whether you  want to purge the contents of the
  LISTSERV reader or not. In that case, you should probably answer NO and
  make sure  to transfer  all important reader  files to  another account
  before starting the server again, and to discard the remainder.
 
  LISTSERV  should  then  reply  with a  message  saying  "Initialization
  complete" and wait  for a command from the keyboard.  You should try to
  issue simple commands like HELP or LIST. When you have decided that the
  server seems  to operate  properly, issue  a STOP  command to  stop the
  server and return to CMS.
 
 
 
  Second session (in normal mode)
  -------------------------------
 
 
  You can now restart the server by typing LSVPROF again.  This time  it
  should  not  run any kind of migration process -- if it does, it means
  that something went wrong in the first  run  and  that  the  migration
  process did not complete successfully.
 
  You  should  now  answer WARM (or just enter a blank line) after being
  prompted for the type of startup procedure to be executed.  Note  that
  this  prompt  is  issued only when LISTSERV is started from a physical
  terminal -- a warm start is automatically performed  when  started  in
  disconnected mode.
 
  LISTSERV  should now be operating in normal mode.  You can issue a few
  more commands to check that it  still  functions  properly,  and  then
  disconnect it by entering a DISC command (you do not have to prefix it
  with #CP as LISTSERV recognizes this command).
 
 
 
 
 
  CONSIDERATIONS SPECIFIC TO BITNET/EARN SITES
  ____________________________________________
 
 
  This  section  is  specific  to  BITNET/EARN  sites  and  contains  the
  definition of LISTSERV "backbone" sites.
 
 
 
  *************************
  * The LISTSERV backbone *
  *************************
 
 
  The  LISTSERV  backbone is a collection of servers which are operating
  24 hours and maintained on a regular basis by their respective  opera-
  tion  staffs,  with  assistance  from the Listserv Coordination Board.
  This backbone is used to support the DISTRIBUTE command (refer to  the
  "Revised  LISTSERV:  Application  Programmer's guide", document number
  A01-004, for a description of the  DISTRIBUTE  command)  and  to  host
  heavy-traffic network-wide peered lists.
 
  BITNET/EARN servers can fall into one of two categories:
 
  o   Local  server:    A  local  server has by definition no obligation
      towards the rest of the network.  It can run any  release  of  the
      code,  with  or  without local modifications.  Its operation staff
      can update it at irregular intervals, place it offline 14 hours  a
      day,  or  do  just  anything they might see fit to do.  The server
      will appear in PEERS NAMES but it will be flagged as being a local
      server.
 
      The only two restrictions placed about those servers are:
 
      1.  If its operation staff encounter a problem with  the  software
          and  the latest available release of the code has not yet been
          installed on the server, no support will be  provided  by  the
          Listserv  Coordination  Board.    The  person who reported the
          problem to the Listserv Coordination Board will merely receive
          a note telling him that his  problem  will  not  be  addressed
          until  he  has upgraded to the latest available version of the
          code.
 
      2.  Local servers are not allowed to create peer lists.  Note that
          the  term  "peer  list"  should  be  interpreted  as   meaning
          "network-wide  public peer list".  A closed peer list local to
          the various nodes of an institution does not  fall  into  that
          category.
 
      A  local  server  can  create  a network-wide list by means of the
      Mail-Via= DISTRIBUTE feature.  Local servers can submit DISTRIBUTE
      jobs to the backbone, but will not receive any.   If a  peer  sub-
      backbone is required for the list (e.g. if large archive files are
      to  be made available), the local LISTSERV operations staff should
      try to find hosts in the backbone or should join the backbone.
 
  o   Backbone server:  A backbone server can do all of the  above,  can
      create peer lists and is supposed to receive DISTRIBUTE jobs.  The
      restrictions placed on the backbone sites are the following:
 
      1.  A  backbone  server  should  always be at the latest available
          level.  This means that the  operations  staff  should  either
          allow  the  Listserv  Master  Coordinator to update the server
          remotely, or take whatever steps are necessary to update it in
          a timely basis.  The average delay should not exceed one week,
          with the deadline being two weeks.
 
      2.  A backbone server cannot be placed offline on a regular basis.
          It must operate 24 hours.  It can of course be placed  offline
          manually  under  particular  conditions,  lists can be held by
          their respective owners, etc.
 
      3.  A backbone server must  be  AUTOLOG-ged  when  the  system  is
          IPL-ed,  and  ought  to  be automatically restarted at regular
          intervals in case it logs off due  to  some  hardware  failure
          (e.g.  paging  error).    This  applies only if such a restart
          facility is already available at the site hosting the  server.
          In  any  case, local operators should be able to restart it if
          they are also able to restart RSCS and other service machines.
          That is, the host site should do its best to ensure  that  the
          server is restarted on a regular basis in case it crashes.
 
      4.  A  backbone  server  should have the latest version of BITEARN
          NODES, or in the worst case, the  version  from  the  previous
          month.   This applies only if the NODUPD files are received in
          due time of course.
 
  Sites which are willing to become part of the LISTSERV backbone should
  indicate it in the :backbone tag of the PEERS NAMES entry returned  to
  the Listserv Master Coordinator.