Benny Pedersen via Postfix-users:
> Wietse Venema via Postfix-users skrev den 2023-05-04 15:28:
> > Benny Pedersen via Postfix-users:
> >> [OT] answer, when postfix maillist was on cloud9, it had 3 ipv4, 3
> >> ipv6, and i have newver seen mails that was remotely tempfailed used
> >> another ip in cloud9, why this ?
> >
> > Because each host had its own mail queue. Only the majordomo
> > related files were shared, not the message flow.
>
> OP asked how to make this problem of move queue files to another server
> if first failed, with pfqd fail state can be many things, but if postfix
> have no support for move queue files its not going to solve anything,
> only thing that can be solved with pfqd is to cluster spread load and
> fail states
I see little benefit in swapping messages between equal-configuration
MTA instances with IP addresses that are in a similar range and
that have similar reputations.
smtp_fallback_relay is meant to avoid clogging up a fast-path
configuration (short timeouts, no retries, etc.) by handing off
problematic deliveries to a slow-path configuration that uses a
different delivery strategy.
Wietse
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