Hi- After getting U-Verse, all my email accounts worked fine (I have several providers, like Fatcow, GoDaddy, Rackspace, Gmail).... both sending and receiving.
Then sudently the sending via the GoDaddy SMTP server stopped working. Downloading OK.
Reading the forums I see that ATT could be blocking on pourpose.
Can you please release the SMTP ports for GoDaddy's SMTP server (smtpout.secureserver.net)?