I have Exchange 2003 - Server 2003 SBS and am able to sync email with 2 iphones however it will not sync additional phones although it does authenticate the accounts. In the event viewer it get the error message:
Source: ServerActiveSync Event ID: 3005
Unexpected exchange mailbox server error: Server......HTTP status code: 409. Verify that the exchange mailbox server is working correctly.
Is there a setting somewhere where I can let activesync allow more than 2 connections? Like I said I do have 2 customers who can connect and sync without a problem.