I have two yahoo accounts, one is a yahoo.com prefix, one is ymail.com. I set up both on Mail (OSX Lion). They both have the same IMAP settings, ports, SSL, everything. My ymail one works fine. And while the yahoo.com one works fine, too, the "checking mail" icon spins and spins constantly. How can I resolve this? Now, to be honest, my yahoo email does have a lot more mail in it, but the accounts have fully synced up. I've even tried deleting the yahoo account off of Mail and reloaded it. Same result. Thanks in advance for your help.