On 4/22/26 2:56 PM, Brinson, Jason T via Mailman-users wrote:
Mark,
First, thank you for your patience.
So, I scoured my logs looking for mentions of -join or -request emails and couldn’t find anything. So I went back and checked the source for one the emails that was in moderation and found this:
Received: from esa.hc4021-78.iphmx.com (esa.hc4021-78.iphmx.com [207.54.93.77]) by cc-postoffice-01.cc.gatech.edu (Postfix) with ESMTPS id AF674400A3C for <demo-list@mailman.cc.gatech.edu>; Wed, 22 Apr 2026 17:27:54 -0400 (EDT)
Which in the logs looked like this: ... [root@cc-postoffice-01 ~]# journalctl -u postfix | grep AF674400A3C Apr 22 17:27:54 cc-postoffice-01 postfix/smtpd[677096]: AF674400A3C: client=esa.hc4021-78.iphmx.com[207.54.93.77] Apr 22 17:27:54 cc-postoffice-01 postfix/cleanup[676116]: AF674400A3C: message-id=<BN0PR07MB876638D9CD221355993FF318A02D2@BN0PR07MB8766.namprd07.prod.outlook.com> Apr 22 17:27:54 cc-postoffice-01 postfix/qmgr[523389]: AF674400A3C: from=<shae@cc.gatech.edu>, size=14593, nrcpt=1 (queue active) Apr 22 17:27:54 cc-postoffice-01 postfix/lmtp[677032]: AF674400A3C: to=<demo-list@mailman.cc.gatech.edu>, relay=127.0.0.1[127.0.0.1]:8024, delay=0.3, delays=0.28/0/0.01/0.01, dsn=2.0.0, status=sent (250 Ok) Apr 22 17:27:54 cc-postoffice-01 postfix/qmgr[523389]: AF674400A3C: removed
But when you dig into the source of the message the actual to field is:
From: "Brinson, Jason T" <shae@cc.gatech.edu> To: "demo-list-join@cc.gatech.edu" <demo-list-join@cc.gatech.edu> Subject: Test Thread-Topic: Test Thread-Index: AQHc0p7SggqXD6aw1U2cnq5Fx0tjdg== Date: Wed, 22 Apr 2026 21:27:52 +0000 Message-ID: <BN0PR07MB876638D9CD221355993FF318A02D2@BN0PR07MB8766.namprd07.prod.outlook.com>
The Message-ID matches what is in the log file, and it is obviously not addressed to just demo-list. I am missing something obvious here I feel.
The To: (or Cc:) header in the message has nothing to do with it. It's the envelope recipient that determines the destination of the message. According to the log message
Apr 22 17:27:54 cc-postoffice-01 postfix/lmtp[677032]: AF674400A3C: to=<demo-list@mailman.cc.gatech.edu>, relay=127.0.0.1[127.0.0.1]:8024, delay=0.3, delays=0.28/0/0.01/0.01, dsn=2.0.0, status=sent (250 Ok)
the envelope recipient is demo-list@mailman.cc.gatech.edu which was probably mapped from demo-list@cc.gatech.edu by postfix_vmap.
What is the MUA that created this mail? What's in Mailman's smtp.log with timestamps around Apr 22 17:27:54?
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan