I have noticed a plethora of questions on this topic on this discussion
board, and I am now afflicted with the same problem.
I have used Outlook 2003 for about 3 years (or maybe 4) and never had more
than a blip of a problem. I now have two computers that simultaneously have
quit sending any email at all through Outlook. I have spent all day on the
phone with my service provider and we have checked every setting imaginable.

I am wondering if anyone knows if Microsoft has changed anything in the last
while. On their help page there are a whole batch of questions from folks
since mid-sept on this. I went away on Sept. 11 and all was fine - and I
came back yesterday to two computers that won't send.

I have tried both port 587 and 25. I have tried changing all settings. I
have removed start up blocks from my computer. Ihave created a new email
account. I can send just fine from webmail but not from Outlook.

HELP!