I had a exchange 2003 on a server 2003 std server. I setup a new 2008 server with exchange 2010 and moved mailboxes over then removed exchange 2003 from the 2003 server. Now im using the new server and everything seems to be working ok until i noticed that if i create a contact on my iphone it doesnt copy over to my exchange server. If i create a new contact in outlook it will push to my iphone. Mail and Calendar Items sync fine. I have ports 25, 443, and 80 open on the firewall. Not sure if something didnt transfer from the old server to the new server or if jailbreaking the iphone has something to do with it. Any suggestions on why only one way syncing of contacts.