On 2013-11-07 8:53, Jan Phillip Greimann wrote:
This is dovecot 2.2.7, postfix 2.10.2, all addresses type virtual
mailbox domain class, and dovecot/lmtp delivery.
I noticed a strange log-entry since the last day:
Nov 7 08:34:42 hetzner postfix/lmtp[3764]: 61CB01A3938:
to=<jg+introvers...@larptreff.de>,
relay=mail.larptreff.de[private/dovecot-lmtp], delay=0.05,
delays=0.01/0.01/0.02/0.01, dsn=4.4.2, status=undeliverable (lost
connection with mail.larptreff.de[private/dovecot-lmtp] while sending
MAIL FROM)
I noticed as well, that some of my addresses lead to unusual rejections
never anticipated before:
postfix/lmtp[1234]: 3dFbVw2NVmz6SL: to=<exam...@example.com>,
relay=mx1.example.com[private/dovecot-lmtp], delay=0.04,
delays=0.03/0/0/0.01, dsn=4.4.2, status=undeliverable (lost connection
with mx1.example.com[private/dovecot-lmtp] while sending MAIL FROM)
It seems this only happens on mails with "+"-Delimiter.
In my case regular addresses are rejected as well (see example).
What I really do not understand is that out of e.g. 50 different
recipient addresses of one virtual mailbox domain only a few are
rejected, the other pass as usual. This is not random, some addresses
pass always, others fail reproducible.
In my opinion there is only one thing which could cause this problem:
I updated my dovecot on 2013/11/04 from 2.2.6-1~auto+36 to
2.2.7-1~auto+2
I updated two days ago.
I will try to downgrade again, did someone have a clue?
I have no clue what leads to those random rejections of recipient
addresses. After setting ...
| warn_if_reject reject_unverified_recipient
... those mails are accepted. But I do consider this a temporary
workaround.
Regards,
Michael
