This guide describes some of the possible causes that can lead to troubleshooting ActiveSync 2003 problems, and then suggests some possible solutions to the problem.
Active sync is not working and Event Viewer only throws a generic error. Have all seen this?
Unexpected Exchange Mailbox Server Error: Server: [Server] User: [ [email protected] ] HTTP Status Code:  Make sure the mailbox Exchange server mailbox is working correctly.
The rest of the letter works. Send / Receive, OWA, etc. Any help is appreciated
In 2003, I usually go to this page to do something wrong with activesync.
However, if nothing has changed, you can simply restart IIS.
Which Mobile Devices Are Responsible For Communicating With The Server?
Before going into the details of the scenario, let’s look at some of the key requirements for mobile devices that use EAS to communicate with Microsoft Exchange.
- If the mobile device receives an unexpected response from the server, ito shall process the response and retry at a reasonable interval. Devices are also responsible for managing timeouts that occur outside of IIS and can be caused by network latency.
- Every time a device makes a request to IIS / Exchange, it must also inform the user agent about it.
Various Activesync Bugs / Solutions:
REMEMBER. If you make any changes to the IIS settings, start IISRESET, visit https://testexchangeconnectivity.com again and run the test again.