On 7/22/25 9:47 AM, jko...@luc.edu wrote:

Error before changing main.cf:
2025-07-20T22:14:30.381945-05:00 lstprdls01 postfix/smtpd[3713490]: NOQUEUE: reject: RCPT from 
unknown[10.18.3.105]: 454 4.7.1 <joet...@lists.luc.edu>: Relay access denied; 
from=<jko...@luc.edu> to=<joet...@lists.luc.edu> proto=ESMTP 
helo=<DM1PR04CU001.outbound.protection.outlook.com>

Error after adding F5 IP to mynetworks:
2025-07-22T11:27:13.885111-05:00 lstprdls01 postfix/smtp[174935]: AB1C11C0229: 
to=<joet...@lists.luc.edu>, relay=lists.luc.edu[147.126.1.184]:25, delay=0.16, 
delays=0.11/0.01/0.04/0, dsn=5.4.6, status=bounced (mail for lists.luc.edu loops back 
to myself)

Any help would be greatly appreciated.

Is Postfix configured per https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/docs/mta.html#postfix

What is the output from `postconf -n`?

What is the content of Mailman's var/data/postfix_lmtp? In particular, are the domains of the list addresses lists.luc.edu and not listservnew.luc.edu?


--
Mark Sapiro <m...@msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan
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