[exim-dev] [Bug 1686] DSNs should give the sending IP used

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Aihe: [exim-dev] [Bug 1686] DSNs should give the sending IP used
https://bugs.exim.org/show_bug.cgi?id=1686

jasen Betts <eximbugzilla@???> changed:

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--- Comment #1 from jasen Betts <eximbugzilla@???> ---
(In reply to Jeremy Harris from comment #0)
> To aid matching up a bounce reported from outside with one's own logs
> an item of useful information would be the source IP. We should add this
> to Exim's fail DSN in the hope that other MTAs do likewise.


Ones own logs will contain the exim-id and a timestamp. as exim does not do
parallell deliveries of individual messages that should be sufficient to find
the failure in the logs.

> It would be nice to also have the remote MTA's view of our IP, in case of NAT
> or proxying. Exim includes this in the default response to HELO/EHLO but we
> can't rely on that.


The HELO name if configured correctly will match that. If not there's little
than can be done, as NAT rules can be random, and/or treat different
destination ports differently.

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