can't receive nor send emails anymore

[Han]

Suddenly yesterday it turned out to be impossible to retrieve and send email
via Windows mail.I did not change anything in my settings.
I contacted my provider, attglobal, who worked 36 hrs on it.Spent 4 hrs . on
the phone with their helpdesk.Now I can check email again through webmail,
but not through the ususal Windows Mail setting on my laptop. What happended
do you think?My provider suspects Vista is all at once blocking a port
possibly after an update. .Can you plse arrange that I can retrieve and send
mail like before again.
Thanks, Han

 

[PA Bear [MS MVP]]

Post any errors you're getting when Sending & Receiving in their (verbatim)
entirety.

 

[Gary VanderMolen \(MS MVP\)]

Make sure your settings agree with this:
http://www.att.com/esupport/article.jsp?sid=KB401738

If you get an error with those settings, post the error message here.

 

[Bob]

Which AV program do you have installed?

Do you have AV email scanning enabled?