Problem sending e-mails through K-9

[toolboy]

Hi, I was wondering if anyone using K-9 for e-mail can help. I am able to receive all e-mails from my comcast account via k-9. However, I am unable to send e-mails. I don't get any errors on the "checking outgoing server" screen during set up.

I tried just about every port and nothing works

using smtp.comcast.net

security type - none (have tried ssl and tsl if available)

port I tried 25 and 587 (verified these through comcast)

any help appreciated...

Thanks in advance