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Gmail blocks some mailman messages #111
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It starts with "authentication & identification": as far as I know, we do have consistent "from:" addresses but several IPs from which Mailman will send. The third advice is to "Keep valid reverse DNS records for the IP address(es) from which you send mail, pointing to your domain" which is not entirely clear to me yet. |
I think our SPF record should look like this:
Can anyone confirm? |
I don't have any experience of course, but from the Google support page I understand it should rather be
They say "-all" may cause delivery problems. |
please let me know if anything fails. |
We are also missing valid DKIM signatures, probably not solved yet for mailman. |
With more users in our various mailing lists fewer and fewer messages are falsely classified as "spam", but a major problem persists: Gmail blocks some eMails that it considers suspicious entirely and the addressees can not see them or teach it that it was not in fact spam.
It's likely that I have provoked this when switching all previous newsletter subscribers to the new list, but adhering to Gmail's bulk sender guidelines more closely might solve this issue.
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