Hi Everyone,
These notes are related to using Yahoo IMAP with OSX Mail, but they may be germaine to the iPad and iPhone problems. Since the iOS tries to assume it knows the defaults for Yahoo, I'm wondering if the problem has to do with regular "Yahoo Mail" versus "Yahoo Mail Plus" -- the server settings you are supposed to use are actually different.... Here are my noes on the OSX Mail situation:
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I've had this problem on & off with OSX Mail set up for POP access. Recently, I set up OSX Mail under Lion on another Mac for IMAP access, and the password challenge thing went insane. Totally couldn't figure it out.
Somewhere in a thread, someone commented about SMTP fails being at the root cause. So, I decided to add in the Yahoo! Mail Plus SMTP, which is different form the standard SMTP.
If you are having the password challenge problem AND you are Plus user (and maybe even if you are not?) try adding in this additional SMTP server: plus.smtp.mail.yahoo.com and point your Yahoo account to this server in the Advanced settings.
It's been over 24 hours now, and no password challenge....
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Hope this is helpful!