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

Tue Nov 19 17:22:48 EET 2013

Maybe http://hg.dovecot.org/dovecot-2.2/rev/5f946b807706 solves this also? I’m not sure why it started happening with v2.2.7 though.

On 15.11.2013, at 2.31, Michael Grimm <trashcan at odo.in-berlin.de> wrote:

> On 15.11.2013, at 00:56, Timo Sirainen <tss at iki.fi> wrote:
>> On 15.11.2013, at 0.52, Michael Grimm <trashcan at odo.in-berlin.de> wrote:
>>> On 15.11.2013, at 00:35, Timo Sirainen <tss at iki.fi> wrote:
>>>> On 15.11.2013, at 0.25, Michael Grimm <trashcan at odo.in-berlin.de> wrote:
> 
>>>>> IMHO, it had been introduced by revision 10c0aae82d0d.
>>>> 
>>>> Hmm. What if you get the latest version and just reverse this one change?
>>> 
>>> How can I achieve that with hg, sorry I am not that familiar with hg. First "hg pull -u" and then?
>> 
>> cd …/dovecot-2.2
>> hg export 10c0aae82d0d > diff
>> patch -p0 -R < diff
> 
> Done, but I had to do answer (-->):
> 
> 	mail> patch -p0 -R < diff
> 	Hmm...  Looks like a unified diff to me...
> 	The text leading up to this was:
> 	--------------------------
> 	|# HG changeset patch
> 	|# User Timo Sirainen <tss at iki.fi>
> 	|# Date 1383514035 -7200
> 	|#      Sun Nov 03 23:27:15 2013 +0200
> 	|# Node ID 10c0aae82d0dee0b0107c2262db50d5f6984c181
> 	|# Parent  653d5a81a22e73ff91264f7e7277b1c0206574ec
> 	|ostream: Mark stream closed before handling its callback to avoid infinite loops.
> 	|The callback could call o_stream_copy_error_from_parent(), which in turn
> 	|would try to close the same ostream again.
> 	|
> 	|diff -r 653d5a81a22e -r 10c0aae82d0d src/lib/ostream.c
> 	|--- a/src/lib/ostream.c	Sun Nov 03 22:04:53 2013 +0200
> 	|+++ b/src/lib/ostream.c	Sun Nov 03 23:27:15 2013 +0200
> 	--------------------------
> -->	File to patch: src/lib/ostream.c
> 	Patching file src/lib/ostream.c using Plan A...
> 	Hunk #1 succeeded at 46.
> 	done
> 
> Dovecot v2.2.7 (87ff0023fe79+) starting up. And I can confirm, that again, no status=undeliverable show up. 
> 
> 
>>>> And was this only with the Postfix user existence check or were LMTP deliveries in general failing?
>>> 
>>> It had been status=undeliverable, thus mails didn't become delivered in my case. Only after adding "warn_if_reject reject_unverified_recipient" in smtpd_recipient_restrictions they became delivered.
>> 
>> But I think there were two steps: 1) During SMTP RCPT TO, check is mail can be delivered via LMTP RCPT TO, 2) actually deliver mail via LMTP. Where 1) failed (except with warn_if_reject), but 2) succeeded? Where both were basically doing the same thing, except I suppose with some actual difference. Or were the mails really not delivered via LMTP but something else?
> 
> I am not sure, if I do understand you correctly. My setup is:
> 
> postfix smtpd
> dovecot/lmtp user authentication
> postfix --> amavisd
> amavisd/lmtp --> postfix
> final deliver by dovecot/lmtp
> 
> Here's a log excerpt with v2.2.7 (87ff0023fe79+):
> 
> postfix/smtpd[66223]: connect from example.org[10.100.100.200]
> postfix/smtpd[66223]: Anonymous TLS connection established from example.org[10.100.100.200]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
> Nov 15 01:14:29 <mail.info> example.org sendmail[66221]: STARTTLS=client, relay=[10.100.100.1], version=TLSv1/SSLv3, verify=FAIL, cipher=DHE-RSA-AES256-SHA, bits=256/256
> postfix/cleanup[66227]: 3dLKn10bdfzFNF: message-id=<3dLKn10bdfzFNF at mx2.example.com>
> postfix/qmgr[64303]: 3dLKn10bdfzFNF: from=<double-bounce at example.com>, size=241, nrcpt=1 (queue active)
> dovecot: lmtp(66091): Connect from local
> dovecot: lmtp(66091): Disconnect from local: Successful quit
> postfix/lmtp[66228]: 3dLKn10bdfzFNF: to=<localuser at example.com>, orig_to=<example at example.com>, relay=mx2.example.com[private/dovecot-lmtp], delay=0.04, delays=0.02/0/0/0.02, dsn=2.1.5, status=deliverable (250 2.1.5 OK)
> postfix/qmgr[64303]: 3dLKn10bdfzFNF: removed
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/smtpd[66223]: 3dLKn40f9wzFNG: client=example.org[10.100.100.200]
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/cleanup[66227]: 3dLKn40f9wzFNG: message-id=<201311150014.rAF0ETps066221 at example.org>
> Nov 15 01:14:32 <mail.info> example.org sendmail[66221]: rAF0ETps066221: to=example at example.com, ctladdr=root (0/0), delay=00:00:03, xdelay=00:00:03, mailer=relay, pri=30047, relay=[10.100.100.1] [10.100.100.1], dsn=2.0.0, stat=Sent (Ok: queued as 3dLKn40f9wzFNG)
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/qmgr[64303]: 3dLKn40f9wzFNG: from=<root at example.org>, size=616, nrcpt=1 (queue active)
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/smtpd[66223]: disconnect from example.org[10.100.100.200]
> Nov 15 01:14:32 <mail.info> mail.example.invalid amavis[66086]: (66086-01) loaded policy bank "MYNETS"
> Nov 15 01:14:32 <mail.info> mail.example.invalid amavis[66086]: (66086-01) LMTP::10024 /var/amavis/tmp/amavis-20131115T011432-66086-mM3ZSPVh: <root at example.net> -> <localuser at example.com> SIZE=616 Received: from mx2.example.com ([10.100.100.1]) by mx2.example.com (mx2.example.com [10.100.100.1]) (amavisd-new, port 10024) with LMTP for <localuser at example.com>; Fri, 15 Nov 2013 01:14:32 +0100 (CET)
> Nov 15 01:14:32 <mail.info> mail.example.invalid amavis[66086]: (66086-01) Checking: CYYtr0l_C3qa MYNETS [10.100.100.200] <root at example.net> -> <localuser at example.com>
> Nov 15 01:14:32 <mail.info> mail.example.invalid amavis[66086]: (66086-01) p001 1 Content-Type: text/plain, size: 3 B, name:
> Nov 15 01:14:32 <mail.info> mail.example.invalid amavis[66086]: (66086-01) wbl: whitelisted sender <root at example.net>
> Nov 15 01:14:32 <mail.info> mail.example.invalid amavis[66086]: (66086-01) spam-tag, <root at example.net> -> <localuser at example.com>, No, score=x tagged_above=-999 required=6.2 WHITELISTED tests=[] autolearn=unavailable
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/smtpd[66232]: connect from mail.example.invalid[10.100.100.1]
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/smtpd[66232]: 3dLKn42SQHzFNR: client=mail.example.invalid[10.100.100.1], orig_queue_id=3dLKn40f9wzFNG, orig_client=example.org[10.100.100.200]
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/cleanup[66227]: 3dLKn42SQHzFNR: message-id=<201311150014.rAF0ETps066221 at example.org>
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/qmgr[64303]: 3dLKn42SQHzFNR: from=<root at example.net>, size=1266, nrcpt=1 (queue active)
> Nov 15 01:14:32 <mail.info> mail.example.invalid amavis[66086]: (66086-01) FWD from <root at example.net> -> <localuser at example.com>,BODY=7BIT 250 2.0.0 from MTA(smtp:[10.100.100.1]:10025): 250 2.0.0 Ok: queued as 3dLKn42SQHzFNR
> Nov 15 01:14:32 <mail.info> mail.example.invalid dovecot: lmtp(66091): Connect from local
> Nov 15 01:14:32 <mail.info> mail.example.invalid dovecot: lmtp(66091, localuser): copy from <lmtp DATA>: box=INBOX, uid=475527, msgid=<201311150014.rAF0ETps066221 at example.org>, flags=()
> Nov 15 01:14:32 <mail.info> mail.example.invalid dovecot: lmtp(66091, localuser): QoteB2VnhVIrAgEASjbbSg: sieve: msgid=<201311150014.rAF0ETps066221 at example.org>: stored mail into mailbox 'INBOX'
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/lmtp[66228]: 3dLKn42SQHzFNR: to=<localuser at example.com>, relay=mx2.example.com[private/dovecot-lmtp], delay=0.12, delays=0.02/0/0/0.1, dsn=2.0.0, status=sent (250 2.0.0 <localuser at example.com> QoteB2VnhVIrAgEASjbbSg Saved)
> Nov 15 01:14:32 <mail.info> mail.example.invalid dovecot: lmtp(66091): Disconnect from local: Successful quit
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/qmgr[64303]: 3dLKn42SQHzFNR: removed
> Nov 15 01:14:32 <mail.notice> mail.example.invalid amavis[66086]: (66086-01) Passed CLEAN {RelayedInternal}, MYNETS LOCAL [10.100.100.200]:40204 [10.100.100.200] <root at example.net> -> <localuser at example.com>, Queue-ID: 3dLKn40f9wzFNG, Message-ID: <201311150014.rAF0ETps066221 at example.org>, mail_id: CYYtr0l_C3qa, Hits: -, size: 608, queued_as: 3dLKn42SQHzFNR, 290 ms
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/lmtp[66230]: 3dLKn40f9wzFNG: to=<localuser at example.com>, orig_to=<example at example.com>, relay=10.100.100.1[10.100.100.1]:10024, delay=3.4, delays=3.1/0/0/0.29, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[10.100.100.1]:10025): 250 2.0.0 Ok: queued as 3dLKn42SQHzFNR)
> Nov 15 01:14:32 <mail.info> mail.example.invalid postfix/qmgr[64303]: 3dLKn40f9wzFNG: removed
> 
> HTH,
> Michael
> 