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

dandadude

• September 28, 2022 13:23

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

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  cPRex Jurassic Moderator

  • September 28, 2022 19:39

  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?

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  dolphyn

  • January 13, 2023 23:17

  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: [INDENT=2] accept hosts = : [INDENT=2] warn hosts = ::1 [INDENT=4] 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

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