[Dovecot] POP3 problems

[Urban Loesch]

Am 04.01.2012 19:11, schrieb sottilette at rfx.it:
> On Wed, 4 Jan 2012, Timo Sirainen wrote:
>
>>> Migrated a 1.0.2 server to 2.0.16 (same old box).
>>> IMAP seems working Ok.
>>> POP3 give problems with some clients (Outlook 2010 and Thunderbird 
>>> reported).
>>> Seems authentication problem
>>> Below my doveconf -n (debug enbled, but no answer found to the 
>>> problems)
>>
>> What do the logs say when a client logs in? The debug logs should 
>> tell everything.
>
> Yes, but my problem is that this is a production server with a really 
> fast increasing log, so (in my limited skill of dovecot), I have some 
> difficult to select interesting rows from it (I hoped this period was 
> less busy, but my customers don't have the same idea ... ;-) )
> Thanks for hints in selecting interesting rows.

Try to run "tail -f $MAILLOG | grep $USERNAME" until the user logs in 
and tries to fetch his emails.

$MAILLOG = logfile to which dovecot logs all info
$USERNAME = Username of your client which has the problems

>
>>> doveconf: Warning: NOTE: You can get a new clean config file with: 
>>> doveconf -n > dovecot-new.conf
>>
>> You should do this and replace your old dovecot.conf with the new 
>> generated one.
>>
>>> userdb {
>>>  driver = passwd
>>> }
>>> userdb {
>>>  driver = passwd
>>> }
>>
>> Also remove the duplicated userdb passwd.
>
>
> This was an experimental configs manually derived from old 1.0.2 (mix 
> of old working and new).
>
> If I replace it with a new config (below), authentication seems Ok, 
> but fetch of mail from client is very slow (compared with old 1.0.2).
>
> Thanks for your very fast support ;-)
>
> P.
>
>
>
> # doveconf -n
> # 2.0.16: /etc/dovecot/dovecot.conf
> # OS: Linux 2.6.9-42.0.10.ELsmp i686 CentOS release 4.9 (Final)
> auth_mechanisms = plain login
> disable_plaintext_auth = no
> info_log_path = /var/log/mail/dovecot.info.log
> log_path = /var/log/mail/dovecot.log
> mail_full_filesystem_access = yes
> mail_location = mbox:~/:INBOX=/var/mail/%u
> mbox_read_locks = dotlock fcntl
> passdb {
>   driver = pam
> }
> protocols = imap pop3
> ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
> ssl_key = </etc/pki/dovecot/private/dovecot.pem
> userdb {
>   driver = passwd
> }
> protocol pop3 {
>   pop3_uidl_format = %08Xu%08Xv
> }
>