Push delayed on Exchange Activesync

Hello.

Having an issue on my iPhones and Droid devices where the email push to the phones sometimes takes 30-45 minutes to post. Manual refresh pulls down data so I know the connection is good, it is just that any new items to hit the mailbox take a long time to post.

Exchange 2003 SP2 with OWA server.

I found an article: http://support.microsoft.com/kb/905013

That talks about heartbeat values that would seem to be pertinent. But before making these changes, I wanted to check in to see if this will cause other issues. Note: My server does not have any of these values in the registry and would need to be added. Thus, my concern before adding them.

Also, I did check the firewall timeout values on rules pertaining to OWA and Exchange and they are all at 30 minutes. Is there some other place on OWA or Exchange I need to check?

Thanks.
Senniger1Asked:
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Alan HardistyConnect With a Mentor Co-OwnerCommented:
The registry key goes on the Exchange server.  It is to do with Anti-Virus interference and is the usual culprit when the test site shows All Greens and the mail doesn't flow.

The reg keys in the KB article I've never added - the Default Website Timeout usually has a better result IMHO (details in my article).
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Alan HardistyCo-OwnerCommented:
Please look at the inconsistent sync section of my article and make sure you have the registry key added.  If not - please add it and then see if the problem goes away.

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_1798-Exchange-2003-Activesync-Connection-Problems-FAQ.html
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Senniger1Author Commented:
Good info, thanks. A few questions...

The reg key that you indicate to add, does that go on the Exchange server, the OWA server, or both?

Also, the reg keys I mentioned in the KB 905013, do those have any value to add? And should they be applied to the Exchange server, OWA server, or both?
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Senniger1Author Commented:
BTW - All tests on the connection analyzer were successful.
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