I have filter exceptions set up for dns and pop3 and accessing our
outside
pop3 mail server works fine ... for a couple days. Then I start
getting
users who can't access their mail. It seems to fail on dns lookup. If
I
unload and reload ipfilt, it starts working again, for another couple
days.

What is going on, and how can I get it to keep working? This seems to
have
started after applying the latest patches, but there have been several
(BM,
tcp, nss, etc) and I'm not sure which is causing the problem.

Thanks,

Dan Pearson