can't authenticate via pop3

"ip guy" <[email protected]> Wed, 9 Apr 2008 14:29:41 +1000
Newsgroups gmane.mail.spam.tmda.user
Message-ID <[email protected]>
Hi All

I'm having issues authenticating again our pop3 server with tmda-cgi.
I think i've set everything up correctly but it's just not authenticating...
even stranger is logging...
Where does tmda-cgi log it's data ?