Active Synch error with Mobile Phone and Exchange Server 2003

[wellscs]

Below is the error mesaage that we get when trying to synchronise one of our HTC TYNii mobile phone phones to Exchange Server 2003. We are currently using 8 of the phones on our system and the other 7 work perfectly fine. The users credentials work fine on OWA. The heading Microsoft Exchange is the error reported on Active Synch on the phone. Please help!

Application Event Viewer

Event Type: Error
Event Source: Server ActiveSync
Event Category: None
Event ID: 3005
Date: 20/01/2009
Time: 12:58:59
User: WCS\dan
Computer: WCSMAIL
Description:
Unexpected Exchange mailbox Server error: Server: [wcsmail.wcs.wells-cathedral-school.com] User: [d.nancekievill@wellscs.somerset.sch.uk] HTTP status code: [409]. Verify that the Exchange mailbox Server is working correctly.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.


Microsoft Exchange
Result:
Your account in Microsoft Exchange Server does not have permission to synchronize with your current settings. Contact your Exchange Server Administrator

Support Code 0x850110004

[SYNACK]

Just to check, it is enabled for Activesync in the AD/Exchange user properties isn't it?

http://technet.microsoft.com/en-us/l...EXCHG.65).aspx

[wellscs]

yes it is

[AliG]

Have you installed the certificates on the mobile device- Activesync - Tools - advanced settings - install device certificates

[dirtydog]

ive had this problem and still isnt resolved as its only me that uses it. I found a setting which ended up users logging into webmail needed to type domain\username but then it worked perfectly (forgot the setting though). anyways it lead me to believe that its a problem with our self assigned certificate even though its installed on the device correctly.

[wellscs]

The problem were having is that it works fine on 7 of our mobile phones, its just one that does not work if I try another account it works fine