Question : Problem: Iphone doesn't recieve push emails

The CEO of the company wants his iphone setup to receive email, contacts, and calendar items.  I setup the phone using active sync and it connects when you go into the mail application but it doesn't push emails out.  We have a few windows mobile device that work perfectly fine.  
Under "fetch new data" the push feature is on and under advanced for mail, contacts and calendars, it is set to push.  Is there anything I am missing?  

Answer : Problem: Iphone doesn't recieve push emails

I had the same issue at a client a while ago.  The iPhones could connect to Exchange using ActiveSync just fine, but they had to always manually do a fetch (send/receive).  The Exchange AUTD (always up-to-date) feature wouldn't work.

The problem ended up being that there were host headers configured for the default web site (where the Exchange virtual directories were).  I ended up creating a new web site with no host headers, and exported the Exchange virtual directories into this new site and the feature started working fine.

Obviously this might not work for your situation or might not even apply, but I figured I'd throw it out there as a suggestion for something to at least check.