I recently encountered an issue getting an IPhone 3gs to receive push email from a SBS 2003 Exchange server.
Having read many article, let me say that this IS POSSIBLE. There are a lot of posts out there that say:
- You can’t do it with Exchange 2003 you need Exchange 2007 or 2010
- You need to use IMAP
- You need ISA server in the middle
These are incorrect.
The customer has a fairly standard Single SBS 2003 box with exchange all on the one server, running SP2 and Outlook over RPC/Outlook anywhere fully working – a typical setup for a small company.
The key problem I discovered was that OMA (Outlook Mobile Access) is required for by the iPhone to synchronize with Exchange. To enable this:
- Open the Default Website in IIS 6
- Disable the IP address restrictions on the exchange-oma directory
- Restart IIS (iisreset)
Once done the iPhone email synchronization started working fine.