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Why is my Exchange Active sync out pacing my rules.

Posted on 2009-05-06
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I have recently migrated an Exchange 2003 front end/back end environment to new installs of Exchange 2003 front end/back end in VMWare.  They are now on quad cores with 4 gigs of ram each VM.  My users are now complaining that their Motorola Q's are beeping, only to find no mail.  As it turns out, their devices are seeing new mail before rules are applied that move them into folders or junk mail.

This is annoying because they are support techs that are required to answer support emails within an hour 24X7.  Every junk email or mailing list is getting them out of bed at 3 am only to find an empty inbox.  They are blaming VMWare causing Exchang's reaction time to slow.  Tha's bad because when I found them they were in the stone age.
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Question by:redairforce
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ActiveSync triggers before anything else does, and I don't think you can change that. It is due to where ActiveSync "sees" the message. Blackberry has the same problem, although I think they put something in to BES to delay email. I not aware of anything similar in ActiveSync.

Simon.
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by:redairforce
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That was somewhat my conclusion.  As stupid users go, I do have to concoct an explanation for the change in behavior.  Would you say that in their previous environment, Exchange moved so slowly that the rules applied prior to ActiveSync activating?  Now that they have a proper implantation on cutting edge hardware Exchange is moving fast enough that this problem exists.  In that case, my work was definitely needed and this symptom is actually proof that they are better off.

For anyone else who may come across this question, is there some sort of hack code to inject to make either ActiveSync or the front end server slow down long enough for the rules to take effect?
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by:Mestha
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Exchange performance doesn't really change with increased hardware. You cannot throw hardware at Exchange 2003 and see performance gains. I would have expected to have seen the same behaviour consistently.
Did you change anything else? AV or Antispam product?

Simon.
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by:redairforce
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Yes, their previous environment had Symantec Exchange add in on their backend exchange server and some other Exchange antivirus on the front end.  There was also improper connections between the two including GAB and auto-busy services.  Their AD servers were not talking properly to each other as well.  This place was the perfect storm of no central planning.

People used to complain that an email sent from one workstation could take up to 15 minutes to make it to another.  This environment also includes external Linux list servers and DNS.

Exchange has never been healthier than it is now.  I do make the assumption that the front end was not able to process incoming mail for a while after it made it to their inboxes.  Now it is instantaneous.  

The customer did actually ask me if there was some way to slow down Exchange to allow for the rules to take effect before they send to phones.
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by:Mestha
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I don't know what else to suggest. It is not something I have seen myself.
I have rules to move the messages in to other folders and those do not trigger my PDA at all. However I am not working in fe/be environment and I haven't got one I can test with at the moment.

Are the devices configured to sync all of the folders? That could cause this problem.

Simon.
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by:redairforce
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No, they are set to default of Inbox.  From what you have told me this situation is indicative of ActiveSync.

I think I will leave this question open for another week or so and see if anyone has a suggestion.

Either slow down exchange so the rules take effect before FE activates ActiveSync, or setting that does this for me.  Or explanation for why this is happening now rather than before.

Thank you so much for your input Simon.
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