Disable unauthorized exchange 2003 active sync users

I have a directive to disable users from checking email on their personal smartphones. I have disabled outlook mobile access, user initiated synchronization and up-to-date notifications for these users and it appears they can still get their emails. What else can I do?  We need to keep OWA enabled.
TPMcAsked:
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R. Andrew KoffronCommented:
restart the IIS,
once a phone has a connection it doesn't get forced to re-authenticate as long as the initial connection is maintained.
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TPMcAuthor Commented:
I rebooted the server after these changes we made.
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TPMcAuthor Commented:
This appears to be a global change. I need to restrict some users and enable others.
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R. Andrew KoffronCommented:
check this article out.
also I seem to remember someone badgering me into manually restarting IIS even after rebooting to correct a similar issue... worth a try.

http://technet.microsoft.com/en-us/library/ff959225.aspx
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Pete LongTechnical ConsultantCommented:
>>I need to restrict some users and enable others.

Sorry My appologies :(

Pete
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TPMcAuthor Commented:
manually re-starting the IIS Service fixed the issues with iPhone users, but some smartphones use OWA and you can not block that.
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