has anyone noticed problems in the last 30 days an inability to delete email from the phone? I have rebuilt mailboxes to make sure I didn't have some weird sync feature clicked and it's not working. Very annoying.
Both on my yahoo account and on MS Exchange. I checked my sync options, deleted accounts. They load emails fine, but I can't delete them from the phone. I'm having a similar issue with calendar items not showing up on one or the other in MS Exchange.
I've checked my sync options, but as you know, iphones don't have a ton of settings that need to be tweeked. i had 'sync all' messages and changed it to 'last 2 weeks' and no difference.
Because you're having problems with both Yahoo IMAP and MS Exchange, also with the Calendar sync too, I would imagine it to be a problem with your iPhone and not a server side problem.
Have you tried defaulting the iPhone to factory defaults? (Backup data beforehand!)