I just spent the last 1/2 hour trying to figure out why I couldn't receive my pop3 mail, checking and rechecking the settings, spelling etc. I kept getting the "can't find server" error. Then I remembered my NIS/Outlook firewall rules
which I set up to block those HTML bugs. I added a rule to "allow mail.dslr.net"
and it's working fine now.
Thanks to rcdiver for posting this in the forum.