Since the upgrade, one of my two att.net email accounts won't allow me to send emails. In checking the outgoing servers, on both accts, one is "Yahoo! SMPT Server" but on the one not working it says "smpt.att.yahoo.com." This account does not give me the option of the first, so don't understand why not. PLEASE HELP! This nonfunctioning account is connected to my work of course!!!