at&t email won't connect to pop account settings.

First, create a Secure Mail Key.

If you already have an SMK and it's not working, use that link to go in and delete it and create a new one. Use that one in Outlook instead.

Then in Outlook use that key wherever Outlook asks for a password.

If you still get errors, use these alternate servers instead of the att.com servers.

IMAP

imap.mail.yahoo.com  (use Port 993 and SSL/TLS)

smtp.mail.yahoo.com  (use Port 465 and SSL/TLS)

POP3

pop.mail.yahoo.com  (use Port 995 and SSL/TLS)

smtp.mail.yahoo.com  (use Port 465 and SSL/TLS)

I am still not able to sending or receive email using the above pop3 settings.

Ok I got it when I followed your secure key info.  That worked for my pc,  thank you.

I am facing the same issue, I encountered "timed out" errors while sending Gmail two weeks ago. A week later, I couldn't connect to AT&T and Gmail accounts using IMAP or POP. After resetting the accounts, I sent and received emails by bypassing my router and connecting directly to HughesNet modem. Today, the two Gmail accounts aren't connecting to the server even with direct connection. I suspect my HughesNet connection is causing the problem, but only my HughesNet email works consistently. Both my desktops running Windows 7 have this issue.

This is a recurring problem. Mine was working again for a while, then suddenly stopped again. No one has a clue why. 

I have checked all settings many  times, I have re-set the secure key, and i have tried the pop.mail and inbound settings many times. 

Nothing works and no one at ATT will admit they did something.