Yahoo Mail Problem?

[tony]

I'm having difficulties of trying to setup yahoo mail in aquamail, it worked for a day, then it suddently couldn't sign into yahoo mail due to wrong username or password,  or sometime it shows incoming server or outgoing server problem. 
Anyone had the same problem?  Any solution?

[cng52]

I have the same problem with Gmail.  I have deleted the account and then I cannot set it up again.  I keep trying.  Come back later and it will configure and set up.  Then runs for a few hours with mail check every 15 minutes.  Then it stops again with this error.  What is going on?