GMAIL error: Messages missing a valid messageId header are not 550 5.7.1 accepted

dandadude

Well-Known Member
Apr 14, 2011
62
1
58
Hi!

My problem is that gmail gives the following error message to the e-mail sender when sent to an address hosted on cPanel which is forwarded (with forwarder) to a gmail address:

****@gmail.com
(ultimately generated from ***@*******.tld)
host gmail-smtp-in.l.google.com [142.250.102.26]
SMTP error from remote mail server after end of data:
550-5.7.1 [IP of cPanel host] Messages missing a valid messageId header are not
550 5.7.1 accepted. w4-20020a05640234c400b0043a9bb390d3si6561669edc.278 - gsmtp

I have read the threads regarding the same issue:

I have tried adding the "submission/sender_retain" stuff to probably the right place, but no change.

What can I be missing and why is this even needed?

Please help me!

Thanks,
Daniel
 

cPRex

Jurassic Moderator
Staff member
Oct 19, 2014
16,484
2,605
363
cPanel Access Level
Root Administrator
Hey there! If you've investigated four similar threads and couldn't find a solution, this would likely be better handled through a ticket to our support team so we can investigate this directly on your system. Can you create that ticket and then post the number here so I can follow along?
 

dolphyn

Well-Known Member
Nov 27, 2001
72
0
306
cPanel Access Level
Root Administrator
We had a similar issue (with one of the MailMan lists) but exim_mainlog showed messages originating from ::1 instead of 127.0.0.1 -- so we added the following entry to the custom_begin_mail_pre Exim ACL:

accept hosts = :​

warn hosts = ::1​
control = submission/sender_retain​

It seems to have worked, and ALSO reduced or eliminated Yahoo/AOL error "554 5.7.9 Message not accepted for policy reasons. See https://postmaster.yahooinc.com/error-codes"