Authentication problem in sieve FC3 SOLVED

It seamed that the FC3 network install was messed up in some way.
Reinstalled from checked CDs and everything works as expected.
Thanks all for your input.

Now that I have a mail filter working, I'm thinking of having
SpamAssassin mark the mail for spam.

So far I have managed to get it running as a general filter for all users
by specifying it as a  filter in my postfix master.cf

filter unix - n n - - pipe
   user=filter argv=/usr/local/bin/filter.sh -f ${sender} -- ${recipient}
smtp inet n - n - - smtpd
 -o content_filter=filter:
smtp unix - - n - - smtp
 -o content_filter=filter:

Where the filter.sh script sends the mail through spamassassin

And comment out the existing smtpd lines, and then use cyrus as mail transport
in the postfix main.cf file.

The problem with this is, that it filters all mails in the same way.

Any suggestions how to filter mail on a per user basis, i.e.
so that each user could have their own SpamAssassin settings
and baysian traing data.

Regards
Uno Engborg