On Mon, 10 Sep 2018, Stefan Bauer wrote:
i know this is not postfix mailing list - but postfix list said - its
not supported yet - so hoping for a trick from postmasters ;)
Huh, that's curious, unless they mean "you need Postfix 3.0" perhaps? But
anyway...
Sep 9 23:40:35 postfix/smtp[29230]: 988B7809D4: to=<a@b.c>,
relay=mail.b.c[1.2.3.4]:25, delay=18342, delays=18342/0.03/0.1/0,
dsn=4.7.4, status=deferred (TLS is required, but was not offered by host
mail.b.c[1.2.3.4])
This is literaly the example for *_delivery_status_filter in postconf(5)
man page, a feature "originally implemented for sites that want to turn
certain soft delivery errors into hard delivery errors."
Check the Postfix 3.x RELEASE_NOTES under "Major changes - delivery status
notifications" for full discussion/examples._______________________________________________
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