Re: List emails not reaching hotmail/outlook/...

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On Fri, 9 Jan 2026, Ralph Corderoy wrote:

> Hi,
>
> I'm seeing lots of complaints from Mailman like
>
>    all hosts for '$domain' have been failing for a long time (and retry
>    time not reached
>

Check your MTA logs, I am sure they reject your mail for policy (DMARC, SPF, DKIM)
reasons.  Mailman has some DMARC mitigations in place (basically rewriting
the sender's From address to be the list address).

Once I ran my mailman instance what have helped is to have a separate
delayed mail queue (easy to do in sendmail) for Google Mail, not to send
too much there at once.

Running a self hosted email became hard these days, mailing lists are very difficult.

Marcin
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