[Dovecot] status=undeliverable (lost connection with mail.larptreff.de[private/dovecot-lmtp] while sending MAIL FROM)

[Steffen Kaiser]

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On Thu, 7 Nov 2013, Jan Phillip Greimann wrote:

> That's even the only one with lmtp-debug-messages, now all log entries
> look like that:
>
> http://pastebin.com/raw.php?i=zFeC9Ncr

is this some sort of LMTP ahead to probe the recipient? Greylisting 
perhaps with local recipients? Does " decided action=PREPEND 
X-policyd-weight: using cached result;" mean that no action has been 
performed, but the negative result cached already will be returned. Do you 
have a corresponding lmtp log entry?

To test LMTP try this:

telnet to your LMTP port, or for an Unix socket:

socat - UNIX:/var/run/dovecot/lmtp

Then speak LMTP:

LHLO loc
mail from:<bounce-mc.us5_9954939.11045-jg+introversion=larptreff.de at mail33.wdc03.rsgsv.net>
rcpt to:<jg+introversion at larptreff.de>
quit

and without the +detail in rcpt to. If you get to enter the QUIT without 
losing you connection, your postfix log entry does not makes sense to me.
2xx responses are successful, 4xx temporary error, 5xx errors. You should 
not see no other resonse codes.

See the Dovecot log and probably monitor the system for an abort or 
segfault of a Dovecot LMTP process.

- -- 
Steffen Kaiser
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