first_valid_uid

[Vince42]

Hi,

[Aki Tuomi] - [27.05.2016 22:33]
>> I have error log entries like
>>
>> dovecot: lmtp(22155, mail): Error: user mail: Mail access for users with
>> UID 8 not permitted (see first_valid_uid in config file, uid from userdb
>> lookup).
>>
>> This obviously tells me that the user mail (UID 8) is trying to access
>> the LMTP daemon. How can I find out why he is doing so and how I can get
>> rid of this error message?
>> The mail system (Ubuntu 14.04 LTS : Postfix + Dovecot) is working - but
>> probably not properly configured.

> Check your postfix logs? Maybe there is a clue? Grep for the uid 8
> username.

The mail log says


May 27 22:14:36 server postfix/qmgr[15415]: B05AC15E25C4:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/trivial-rewrite[26512]: warning: do not
list domain domain.tld in BOTH mydestination and virtual_alias_domains
May 27 22:14:36 server postfix/qmgr[15415]: A329215E2678:
from=<webmin at server.domain.tld>, size=707, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: 62CAA15E24F6:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: C321615E2883:
from=<webmin at server.domain.tld>, size=707, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: 0815B15E253A:
from=<webmin at server.domain.tld>, size=707, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: 1212315E27A3:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: 4374015E25F5:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: 4FA1D15E245F:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: 4A65815E24ED:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: 21F6C15E2760:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server postfix/qmgr[15415]: D7F9515E24B5:
from=<webmin at server.domain.tld>, size=708, nrcpt=1 (queue active)
May 27 22:14:36 server dovecot: lmtp(26518): Connect from local
May 27 22:14:36 server dovecot: lmtp(26518, mail): Error: user mail:
Mail access for users with UID 8 not permitted (see first_valid_uid in
config file, uid from userdb lookup).
May 27 22:14:36 server dovecot: lmtp(26518): Disconnect from local:
Successful quit
May 27 22:14:36 server dovecot: lmtp(26518): Connect from local
May 27 22:14:36 server dovecot: lmtp(26518, mail): Error: user mail:
Mail access for users with UID 8 not permitted (see first_valid_uid in
config file, uid from userdb lookup).
May 27 22:14:36 server dovecot: lmtp(26518): Disconnect from local:
Successful quit
May 27 22:14:36 server postfix/lmtp[26517]: A329215E2678:
to=<mail at domain.tld>, orig_to=<domain.tld at domain.tld>,
relay=server.domain.tld[private/dovecot-lmtp], delay=29904,
delays=29904/0.01/0.01/0, ds
n=4.3.0, status=deferred (host server.domain.tld[private/dovecot-lmtp]
said: 451 4.3.0 <mail at domain.tld> Temporary internal error (in reply to
end of DATA command))
May 27 22:14:36 server postfix/lmtp[26516]: B05AC15E25C4:
to=<mail at domain.tld>, orig_to=<domain.tld at domain.tld>,
relay=server.domain.tld[private/dovecot-lmtp], delay=8910,
delays=8910/0.01/0.01/0, dsn=
4.3.0, status=deferred (host server.domain.tld[private/dovecot-lmtp]
said: 451 4.3.0 <mail at domain.tld> Temporary internal error (in reply to
end of DATA command))


which shows more information but leaves me still clueless. Maybe it is a
problem that domain.tld is listed in Postfix's mydestination and
virtual_alias_domains, maybe it is due a "Connect from local", maybe
it's an LMTP misconfiguration ... I hope that somebody will be able to
shed some light on this - and maybe even explain the problem to me. :)))

-- 
Cheers,                        \\|//
Vince                          (o o)
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