fix for dovecot log messages

[administrator at emerald.ucsd.edu]

I wonder if the fix for the dovecot log messages (see links), introduced in FC4 is going to
be implemented in the near future into Yellow Dog. My secure log is really
polluted by the messages about legitimate users checking their e-mail and it
would be very nice to have it fixed.

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=124979
https://www.redhat.com/archives/fedora-list/2005-June/msg00609.html