Hi Wietse,
we are struggling with t-online.de: As you may know as SMTP client you
have to fulfill a bunch of requirements to be able to send mails to
t-online.de. From time to time we receive mails from t-online.de, but
can't answer.
So our idea is, in case the mail comes from t-online.de, we process and
delivery the mail but return an (meaningful) error message to the
t-online.de SMTP client.
This is meant as signal so that huge email provider can't dictate their
rules (besides SPF, DKIM, DMARC, etc. what we support) - and should
prevent a discussion like: "Just fulfill the requirements..." ;-)
Thanks.
--
Hawky
Am 20.09.2024 16:25 schrieb Wietse Venema via Postfix-users:
hawky--- via Postfix-users:
Hi!
I'm looking for a way to process and deliver an incoming email, but
return an error (with a meaningful) message to the client.
By looking at the SMTP status codes
(https://en.wikipedia.org/wiki/List_of_SMTP_server_return_codes) I
don't
see an obvious way to do that. But maybe it is possible in a
non-obvious
way?
Is it possible?
And if yes, can someone give me a hint howto implement?
What problem are you trying to solve? Deliver-and-reject ALL email,
or only SOME email?
Wietse
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