Can't send email with iPhone

Hi,

Do you only see the issue on a specific Wi-Fi network? Try testing on another network or disabling Wi-Fi.

If the issue occurs on all networks, try resetting the iPhone by holding the Home and Sleep/Wake buttons until you see the Apple logo as described here: http://docs.info.apple.com/article.html?artnum=305743

You can also delete the account and then add it again using the instructions provided on Comcasts website: http://www.comcast.com/Customers/FAQ/FaqDetails.ashx?Id=4273

-Jason

My wife and I had the same issue with our 3Gs and I had to delete the account and re-enter it. Now working fine with no issues. Not sure what caused it though.....

You would have to enter your password twice. Once for incoming and one for outgoing.

1. Go to your e-mail account
2. Tap SMTP
3. Tap your outgoing server (underneath primary server)
4. Enter your user name and password again.

I would add to the instructions in the post above:

set "Authentication" to "Password"

After following the above instructions mine still didn't work, and when I looked a bit harder i saw my SMTP Authentication was set to MD5 Challenge-Response - I changed it to "Password" by selecting it from the list, and now it finally works!

Thanks for the info!

THANKYOU SOOO MUCH! LIFE SAVERRR!

Anybody help me out here? Having the same issue, cannot send messages from my iPhone I am either getting the same message as the OP despite all the details being entered or a message telling me the details are incorrect.

I have tried all of the above to no avail.