Problem: I can receive but not send mail through outlook. the account has
been set up for over a year and worked just fine until about two weeks ago
when I tried to send an email to . Then it stopped sending.
Played with the parameters and all of a sudden it started working again. Now
yesterday I tried to send a different message to and it quit
again and I can't get it back. I don't know if that address has any effect
upon it or not.

Tried: Disabling firewall, antivirus. Booting to safe mode. redid all the
parameters. Ran a repair on office. enabled logging:

2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): Authorized to host
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): Connected to host
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): [tx] MAIL FROM: *****
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): rx 250 *****... Sender OK
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): [tx] RCPT TO: *****
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): rx 250 *****... Recipient
OK
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): [tx] DATA
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): rx 354 Enter mail, end
with "." on a line by itself
2006.07.10 10:41:04 SMTP (authsmtp.netzero.net): [tx]
..
2006.07.10 10:41:05 SMTP (authsmtp.netzero.net): rx 552 Attention! You
are currently not logged on. Please log into our network to send e-mail

I also tried using Outlook Express with the same results.
I can telnet into the server OK.
I can go to my laptop and it works just fine.

Anybody got any Ideas on how to fix this without a hammer?

Thanks