Question : Exchange 2003 Activesync - some accounts able to authenticate, some return a 403 error on Exchange and can't connect on mobile devices

The environment has 1 front end OWA/Activesync server and a 1 back end mailbox server where all the mailboxes are located. I have checked the Exchange Features of the accounts that can't connect and they are set identically allowing access at the account level. I have gone as far as copying an account that can access Activesync to a test account name and then trying to connect with the test account with no luck.

I know Activesync is up and running as several accounts are able to sync up without a problem on various mobile devices. The SSL certificate is valid and we have no problems with any accounts accessing their email via Outlook Web Access.

If I create a new account I get the same results. If anyone has seen this problem before or if anyone has any suggestions as to what steps I should take to troubleshoot, I would highly appreciate it.

Thanks,
Dan

Answer : Exchange 2003 Activesync - some accounts able to authenticate, some return a 403 error on Exchange and can't connect on mobile devices

This previous question was resolved after re-reading my FAQ:

http://www.experts-exchange.com/Apple/Hardware/iPhone/Q_25018359.html

Closing comment was:

Author Comments:This ended up being the issue. I was basically being an idiot and not following Alan's instructions. He helped me out and fixed it..thanks to Alanhardisty for all the help.

Can you please re-read my article, check the IIS settings very carefully, then if you make any changes, run iisreset and then re-test.

Is your server running Small Business Server?