In the DOMAIN OVERRIDE file used by the LSV$DNT exit, is the leading
period on the domain name required?  If it is required, will the
domain name without the period also be matched?  If it is not
required, will longer domain names ending with the specified domain
name be matched?
 
Is there a version of the exit available that will force all
domains with :interconnect.MX to the local SMTP?
Here is the file description from the comments in the exit:
 
 
  * Sample LISTSERV exit (version 1.8a and later) to modify the table
  * used to route "domain style" addresses.  LISTSERV calls LSV$DNT
  * after building a file called DOMAIN NAMESUM from the information
  * in DOMAIN NAMES.  This exit encorporates local additions into
  * DOMAIN NAMESUM, if any are found in the "override file".  The file
  * file holding the local routes is defined in the 'override_file'
  * variable.  The default name is DOMAIN OVERRIDE for consistency
  * with LMAIL.  The entries in the file should look like exactly
  * like the lines in DOMAIN NAMESUM, that is:
  *
  * .DOMAIN.NAME.HERE.EDU NJE-GATEWAY-NODE
  *
  * for example,
  *
  * .DECNET.JHU.EDU JHMAIL
  *
  * and they will be sorted properly by the exit routine.  Blank lines
  * and lines beginning with '*' are ignored.  The only validity checking
  * done is a simple check to make sure at least 2 blank delimited words
  * are found on each line.  So be careful, you can shoot yourself in the
  * foot if you put garbage in the override file.
  *
  * This exit will also change all routes for INTERBIT so that all such
  * traffic will be sent to whatever gateway is defined in the variable
  * 'INTERBIT_gateway'.  If you want INTERBIT traffic re-routed, set
  * 'INTERBIT_substitute' to 1.  If the default value for the default
  * gateway isn't appropriate, your local-host is the default, then
  * set the'INTERBIT_gateway' variable to the proper node.  For example,
  *
  * INTERBIT_substitute = 1
  * INTERBIT_gateway = 'JHUVM'
  *
  * would direct all INTERBIT traffic to JHUVM (using the information
  * in BITEARN NODES for JHUVM to determine the mailer userid)
  *
  * The idea here is that you'll never need to change DOMAIN NAMES each
  * month and can still customize the behavior of your LISTSERV with
  * regard to the routing of "domain style" names.
  *
  * From: Jim Jones <[log in to unmask]> (3/16/93)
  * -- modified 7/94 for use with LISTSERV 1.8a
  */