dovecot - Sep 2010 - Auth error

Hello,

I'm testing Dovecot 2.0.

I plan to use Dovecot 2.0 with thousands of domains per server. My user
base is under virtual MySQL.

I my tests, the authentication fails intermittently, and I could not
find what's wrong. Can anyone help me?

################################################################################
Sep 22 16:31:16 box5 dovecot: last message repeated 9 times
Sep 22 16:31:16 box5 dovecot: auth: Debug: auth client connected
(pid=9249)
Sep 22 16:31:20 box5 dovecot: auth: Debug: client in:
AUTH#0111#011PLAIN#011service=imap#011lip=1.2.3.4#011rip=1.2.3.4#011lport=143#011rport=45348#011resp=AHRoaWFnbz1hZG1pbmxpbnV4LmNvbS5icgAxcWF6MndzeA=Sep
22 16:31:20 box5 dovecot: auth: Debug: Loading modules from
directory: /usr/lib/dovecot/modules/auth
Sep 22 16:31:20 box5 dovecot: auth: mysql: Connected to mysqlserver.com
(database_name)
Sep 22 16:31:20 box5 dovecot: auth: Debug:
sql(account=domain.com,1.2.3.4): query: SELECT AccountName AS
userdb_username, Password AS password, MailLocation AS userdb_mail,
concat('*:bytes=', ItQuota, 'M') AS userdb_quota_rule FROM 
Account
WHERE  AccountName = 'account=domain.com' 
Sep 22 16:31:20 box5 dovecot: auth: Debug: client out:
OK#0111#011user=account=domain.com
Sep 22 16:31:20 box5 dovecot: auth: Debug: master in:
REQUEST#0111#0119249#0111#011ba525e3c7ea765255e814a27c5ef8294
Sep 22 16:31:20 box5 dovecot: auth: Error: Master requested auth for
nonexistent client 9249
Sep 22 16:31:20 box5 dovecot: imap-login: Internal login failure (auth
failed, 1 attempts): user=<account=domain.com>, method=PLAIN,
rip=1.2.3.4, lip=1.2.3.4, mpid=9225
################################################################################

Thank you in advance.
Best Regards
--
[]'s
Thiago Henrique
Network Administration
Digirati Networks
K8 Networks

On Thu, 2010-09-23 at 11:58 -0300, Thiago Henrique
wrote:
> I my tests, the authentication fails intermittently, and I could not
> find what's wrong. Can anyone help me?
doveconf -n output could be helpful.
> Sep 22 16:31:20 box5 dovecot: auth: Error: Master requested auth for
> nonexistent client 9249
This shouldn't really happen unless either auth process restarts or
login process dies too early (or unix socket connection to it dies for
some reason)..

Could you try also if the error messages change with this change:
http://hg.dovecot.org/dovecot-2.0/rev/16330c0c8ef4