[Dovecot] Bug? auth(default) Authentication client gave a PID of existing connection

[Brandon Lamb]

On Sun, Oct 26, 2008 at 9:54 AM, Timo Sirainen <tss at iki.fi> wrote:
> On Sun, 2008-10-26 at 09:45 -0700, Brandon Lamb wrote:
>> Anyway, the reason for this post is that I have seen these pop up in
>> my logs, and on one of my mailheads there were some 50 lines of this
>
> But it doesn't happen all the time?
>
>> dovecot: 2008-10-26 09:33:54 Error: auth(default): BUG: Authentication
>> client gave a PID 15661 of existing connection
>
> Does it log anything else than this? Are you running multiple Dovecots?
> Post your dovecot -n output?
>
>> I am using Debian lenny/sid on amd64,
>
> Is it a standard Debian/kernel.org kernel or have you done some
> modifications? This isn't a virtual machine?

Ive been fighting with the pop3 part of dovecot for the past 2 weeks,
and I have tried and changed so many things that to be honest Im
feeling a little bonkers and if you see anything obviously wrong in my
config feel free to chastise me.

The error does not happen every time no, but I have been clearing the
log file a lot because this system has been unstable, having high
loads, running out of auth connections, I have been having chdir
(/mail/mail/usersmaildir) blocked for 12 seconds, I have seen my max
connectiosn for auth workers I think it was run out, that was when I
had a 511 load.

I didnt know if i was under some kind of pop3 connection attack or
what. Im dreading having to tell my boss that we need to go back to
courier pop3... UGH.

I was able to have a single P4 3ghz server be our pop3 server, now one
quad core double the ram box running dovecot as the pop3 server is
falling over, am I just doing something totally wrong here?
/frustrated ramble ramble....