Do you get an error message when you try to send? If so,
right-click on your error message, copy, then paste it into a reply here.
We can't do much troubleshooting without the complete error message.
Comcast made some changes in their email settings. Follow these steps:
http://www.comcast.com/Customers/FAQ...s.ashx?Id=2288
Note that the outgoing server now requires port 587 rather than port 25.
Also, "My server requires authentication" must be checked.
Although those instructions were written for Outlook Express,
Windows Mail uses the same settings.
--
Gary VanderMolen, MS-MVP (Mail)
"MMA-MAN" <MMA-MAN@discussions.microsoft.com> wrote in message news

22A0EBF-8835-4AEB-BEC2-9D9460053841@microsoft.com...
> Have made no changes in system , running through comcast into windows , can
> receive mail can not send from windows mail , however can send it from
> comcast homepage ? Problem has to lie between comcast and windows just can't
> figure out where ?? Any help would be greatly appreciated !!