can't send mail

[andyr]

IThe connection to the server has failed. Subject 'etc', Account:
'mail.comcast.net', Server: 'smtp.comcast.net', Protocol: SMTP, Port: 25,
Secure(SSL): No, Socket Error: 10060, Error Number: 0x800CCC0E have tried
over and over always get the same message

 

[PA Bear [MS MVP]]

Have you ever been able to Send using those settings, Andy?

See http://www.comcast.com/Customers/FAQ/FaqDetails.ashx?Id=2315 (applies to
Windows Mail, too).

Outgoing Port should be 587 (not 25), and the "My server requires
authentication option" should be checked.

 

[mac]

IThe connection to the server has failed. Subject 'etc', Account:
'mail.comcast.net', Server: 'smtp.comcast.net', Protocol: SMTP, Port: 25,
Secure(SSL): No, Socket Error: 10060, Error Number: 0x800CCC0E have tried
over and over always get the same message

You visited the Comcast website?

And found out that you need to change the port number, yes, no?

See the link for all the account settings:
http://www.comcast.com/Customers/FAQ/FaqDetails.ashx?Id=2288

See point 10, especially SSL & Port numbers.