My guess is that subscribers in the INDIGO.IE domain receive
distributions via the LISRTSERV backbone site LISTSERV.HEA.IE and won't
show up in your SMTP logs per se.

Also there are 4 mail exchangers for that hostname with at least 5 (and
possibly more) Domain Name Services for those MX hosts.  This leaves some
latitude for mis-configured, out-of-sync MX or DNS:


Query:Mail Exchange (MX):indigo.ie
indigo.ie       MX      10      una.indigo.ie
indigo.ie       MX      50      smtpmail2.xensei.com
indigo.ie       MX      5       mail.indigo.ie
indigo.ie       MX      10      ann.indigo.ie
indigo.ie       NS      nessa.indigo.ie
indigo.ie       NS      owl.nstn.ca
indigo.ie       NS      ann.indigo.ie
indigo.ie       NS      una.indigo.ie
indigo.ie       NS      ns2.xensei.com
una.indigo.ie   A       194.125.133.11
mail.indigo.ie  A       194.125.133.225
mail.indigo.ie  A       194.125.133.226
mail.indigo.ie  A       194.125.133.227
ann.indigo.ie   A       194.125.133.10
nessa.indigo.ie A       194.125.133.10
owl.nstn.ca     A       137.186.128.11
ns2.xensei.com  A       198.151.175.4
Complete: indigo.ie

Nevertheless, the highest precedence MX is available:

220 relay02.indigo.ie ESMTP
help
214-qmail home page: http://pobox.com/~djb/qmail.html
214 send comments to [log in to unmask]
expn postmaster
502 unimplemented (#5.5.1)
vrfy postmaster
252 send some mail, i'll try my best

--


BTW, [log in to unmask] does seem to be working and able to process
commands:

Return-Path: <>
Received: from PSUVM (NJE origin SMTP@PSUVM) by PSUVM.PSU.EDU (LMail
          V1.2c/1.8c) with BSMTP id 4544; Fri, 17 Apr 1998 11:37:44 -0400
Received: from listserv.hea.ie (193.1.198.5,2586) by PSUVM.PSU.EDU
   (IBM VM SMTP V2R2) with TCP; Fri, 17 Apr 98 11:37:42 EST
Received: from listserv.hea.ie (listserv.heanet.ie [193.1.198.5])
        by listserv.hea.ie (8.8.5/8.8.5) with ESMTP id QAA26892
        for <[log in to unmask]>; Fri, 17 Apr 1998 16:42:15 +0100 (BST)
Message-Id: <[log in to unmask]>
Date:         Fri, 17 Apr 1998 16:42:15 +0100
From: "L-Soft list server at HEAnet (1.8c)" <[log in to unmask]>
Subject:      Output of your job "PMW1"
To: [log in to unmask]

> thanks
You're welcome!
--

Thus you should probably mailto:[log in to unmask] as well as
the POSTMASTERs.

/Pete
--

|Subscription options for Jt Thompson <[log in to unmask]>, list IOMUG:
|
|MAIL           You are sent individual postings as they are received
|FULLHDR        Full (normal) mail headers (formerly "FULLBSMTP")
|REPRO          You receive a copy of your own postings
|NOACK          No acknowledgement of successfully processed postings
|
|I get the same response when I query subscribers who are getting postings.
|At first, I thought there might be something screwy with the address that
|prevented delivery, but the log does not show her as being one of the
|recipients being sent mail when a post to the list is processed.  Does
|anyone have any clues as to what might be the problem?