I just migrated to SBS 2008 for a client and email works just fine except I can't seem to get email (POP3, IMAP) accounts set up on mobile phones (IPHONE, Blackberry). I am however able to set POP/IMAP accounts on clients such as Thunderbird remotely. I keep getting an error message on the phones that username and password is incorrect. I have tried every combination I can think of on the phones. username, domain/username, domain/username/alias etc. Why would it work on a client like thunderbird but not on mobile phones? This makes no sense to me.