[SOLVED] queued mail ... host 127.0.0.1[127.0.0.1] said: 451 4.4.0 detected undelivered mail to <user@domain.com> (in reply to end of DATA command)

G

Gambix

New Member
Proxmox Subscriber
Nov 21, 2024
23
3
3
I am on PMG 9.12 (fully updated), on enterprise repo.

I have an email that does not get transferred to internal server. I can see in the queue as deferred.

In the deferred tab, it says reason:
host 127.0.0.1[127.0.0.1] said: 451 4.4.0 detected undelivered mail to <USER@DOMAIN.com> (in reply to end of DATA command)

USER@DOMAIN.com is our internal domain that I replaced for privacy. Other mails to same internal domain get in with no issues. This one seems to be stuck.

Please HELP ... SUPPORT?

Michelangelo
 
It seems to be related to broken mime header. Found a SOLVED thread about this:
A

[SOLVED] Post in thread 'detected undelivered mail to'

and I updated to PMG9 and the issue is still there for me with Accept Broken MIME Structure enabled

8A9C4181F9C 367715 Thu Mar 5 15:53:23 carla.flores@qsi.ec
(host 127.0.0.1[127.0.0.1] said: 451 4.4.0 detected undelivered mail to <ana@redacted.com> (in reply to end of DATA command))
ana@redacted.com
(host 127.0.0.1[127.0.0.1] said: 451 4.4.0 detected undelivered mail to <info@redacted.com> (in reply to end of DATA command))
info@redacted.com
(host 127.0.0.1[127.0.0.1]...
 
  • Like
Reactions: Onslow
Gambix said:
I have an email that does not get transferred to internal server. I can see in the queue as deferred.
Click to expand...
please share the complete logs of the delivery attempt - from syslog or the journal - and maybe also the redacted mail.

Gambix said:
It seems to be related to broken mime header. Found a SOLVED thread about this:
Click to expand...
see the reference documentation on the topic:
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#pmgconfig_mailproxy_broken_mime
 
  • Like
Reactions: Onslow
You must log in or register to reply here.
Top Bottom
Back