[Dovecot] Dovecot 1.2.13 intermittent authentication failures

[Timo Sirainen]

On Tue, 2010-08-03 at 12:43 -0500, C. Bensend wrote:
> And sure enough, there it is:
> 
> 
> Aug  3 12:15:23 fusion dovecot: auth(default): client in: AUTH  1      
> PLAIN   service=imap    secured lip=127.0.0.1   rip=127.0.0.1   lport=143 
>      rport=19068     resp=<hidden>
> Aug  3 12:15:23 fusion dovecot: auth(default): bsdauth(benny,127.0.0.1):
> lookup
> Aug  3 12:15:23 fusion dovecot: auth(default): bsdauth(benny,127.0.0.1):
> password mismatch

Did you check with auth_debug_passwords=yes what the password is? v1.2
doesn't seem to log it clearly, but by base64 decoding resp= value you
could see it.

> The "password mismatch" would suggest that Squirrelmail may be
> having a problem, which I have asked about on their list.  However,
> just to cover my bases, is there something else that could have
> happened that would be causing dovecot to get *random* password
> mismatch errors?

I vaguely remember seeing something like this before too .. but I don't
remember what the end result was. Maybe you could find something from
Dovecot mailing list archives.