Cannot send email

[dollie]

Can receive email, but not send. Started today and have used Windows Mail for
9 months. For long time, tries to send then terminates.

Your server has unexpectedly terminated the connection. Possible causes for
this include server problems, network problems, or a long period of
inactivity. Subject 'John O. Adams Painting', Account: 'mail.comcast.net',
Server: 'smtp.comcast.net', Protocol: SMTP, Port: 25, Secure(SSL): No, Error
Number: 0x800CCC0F

 

[Frank Saunders MS-MVP IE,OE/WM]

Can receive email, but not send. Started today and have used Windows Mail
for
9 months. For long time, tries to send then terminates.

Your server has unexpectedly terminated the connection. Possible causes
for
this include server problems, network problems, or a long period of
inactivity. Subject 'John O. Adams Painting', Account: 'mail.comcast.net',
Server: 'smtp.comcast.net', Protocol: SMTP, Port: 25, Secure(SSL): No,
Error
Number: 0x800CCC0F

You need to follow Comcast's instructions. You haven't done that.

 

[Gary VanderMolen]

Change port 25 to port 587. Also make sure that "My server requires
authentication" is checked.
If that does not fix the problem, your antivirus is probably the culprit.