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Iphone - Sever ActiveSync Warning 3033

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by philldmc

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I am getting the following warning in my event viewer on my Exchange 2003, sp2.

Event Type: Warning
Event Source: Server ActiveSync
Event Category: None
Event ID: 3033
Date: 2/24/2009
Time: 6:39:03 PM
User: domainname\user
Computer: EXCHANGE
Description:
The average of the most recent [200] heartbeat intervals used by clients is less than or equal to [540]. Make sure that your firewall configuration is set to work correctly with Exchange ActiveSync and direct push technology. Specifically, make sure that your firewall is configured so that requests to Exchange ActiveSync do not expire before they have the opportunity to be processed. For more information about how to configure firewall settings when using Exchange ActiveSync, see Microsoft Knowledge Base article 905013, "Enterprise Firewall Configuration for Exchange ActiveSync Direct Push Technology" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=905013).

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

I get these for my Iphone users only, I have three other Windows Mobile users that do not generate this error...only the two Iphone users.

Any suggestions? I do not have an ISA server, we do have a firewall but it is not a Cisco

3 replies

by swappedsr

I am getting the same thing, still digging to find a solution. I have 4 iphones/itouch's doing the same thing. 2 android phones have no problems and a few blackberrys, no problems either. Effn' Apple.

by lostwitheal

I was having this exact same problem and tried what's recommended in the Microsoft KB article; increased the TCP connection timeout for the relevent HTTPS rule on our firewall. No joy.

Soo, On a hunch I then went and also increased the timeout for the SSL IMAP rule to 10 minutes and restarted the IIS Admin service. I used to get the warning pop up every hour in the event log but haven't had any since doing this over 3 hours ago, so hopefully it's all sorted.

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