I have a WIERD problem this afternoon.

Alas, everything always has to break down Friday afternoon so as to postpone my weekend as long as possible. [/whine]

No one can check POP3 mail all of a sudden. We can receive mail, and we can access mail via web control panel, but we cannot receive any mail via a mail client (thunderbird, outlook, etc.). I get a "connection refused" error. This only began within the last hour.

Firewall log shows this:

12/09/2005 16:27:49.736 TCP connection dropped
Source: 192.168.1.12, 3836
Destination: LAN 64.39.51.10, 110, WAN
'Retrieve Email (POP3)'
That appears every time I get a "connection refused" error trying to check mail. But why is this being dropped at the firewall? I haven't made any configuration changes to the firewall (SonicWALL SOHO3), and it was set up to allow POP3 to slide right on in, as it has been all along. For some reason, within the last hour or so, it just decided it doesn't want to anymore.

So I'm rather lost on this one. Any ideas?