Recurring Active ServerSync errors on Exchange 2003

Hello EE. I keep getting recurringing  Active ServerSync errors on on our Exchange 2003 server. I have applied the solution outlined in:
 
http://www.petri.co.il/problems_with_forms_based_authentication_and_ssl_in_activesync.htm 

Most of the errors are 3005 and some 3029 which say:

Unexpected Exchange mailbox Server error: Server: [Server.Domain.org] User: [User@domain.org] HTTP status code: [507]. Verify that the Exchange mailbox Server is working correctly.

The mailbox server [Server.Domain.org] has its [/Exchange-OMA] virtual directory set to require SSL.  Exchange ActiveSync cannot access the server if SSL is set to be required.  For information about how to correctly configure Exchange virtual directory settings, see Microsoft Knowledge Base article 817379, "Exchange ActiveSync and Outlook Mobile Access errors occur when SSL or forms-based authentication is required for Exchange Server 2003" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=817379).

I get this for different users and have verified their setings in their AD profiles. My event logs fill up with the errors.
InSearchOfAsked:
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Hypercat (Deb)Connect With a Mentor Commented:
That article from the petri.co website is really just a rewrite of the original Microsoft article that is quoted in the error message shown in your post.  I haven't read the petro.co.il article, but I would recommend going to the original Microsoft KB article 817379 and double-check all the steps to make sure everything is correct:

http://support.microsoft.com/kb/817379

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InSearchOfAuthor Commented:
I did that already.
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InSearchOfAuthor Commented:
I had done that prior to the posting. Nofurther comments were posted after my respnse.
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