[QUOTE=daphne;1448970]It's possible Comcast blocks email to their smtp relay sent from other IP addresses besides their own. You might check with Comcast about that, although I've not seen anyone else post about that problem that I recall.
If you set it up on your device, I'd try deleting the account there and try setting it up with your carrier's online BIS site.[QUOTE]
I got same problem with Comcast, Yahoo's fine thou.