You haven't posted whole master nor whole xMTPDeliver (pastebin, please).
Both can contain something that causes multiple deliveries.
On 18.08.17 09:38, Søren Peter Skou wrote:
Pastebin coming up 😊
main.cf : https://pastebin.com/rQTFc50q
master.cf : https://pastebin.com/zfpG2sBB
xMTPDeliver: https://pastebin.com/GrUPuDgJ
I've come to the conclusion that the culprit lies in the "Not local" part
of xMTPDeliver. Once it ships is off using sendmail (postfix) -oi, it is
re-entered back into the queue, and Postfix sees the address once more,
and delivers locally, since the a...@a.test resolves to both b...@a.test and
c...@b.test.
[....]
I believe you should only send local mail to dovecot (not all via
content_filter), you seem to pass everything to is which apparently caused
your problem.
All incoming mail needs to be scanned for Vira/Malware, is why I pass it
to a content_filter, 127.0.0.1:10025 has clamsmtp running. Clamsmtp
returns on port 10026 if clean.In master.cf 10026 is then defined with a
content_filter=spamassassin. This calls xMTPDeliver which handles the
spamc calls.
I see it simple: stop sing content_filter for mail delivery. It is not
designed to do that.
configure the content_filter to push mail back to queue and use postfix to
decide when to forward and when to deliver the mail locally.
--
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