delayed incoming mail when using outlook 2003 in windows 7

Hi Experts,

recently i have deployed few windows 7 and user's feedback that they are suffering incoming email delay in outlook issue.

i have tested and traced at the exchange server 2003 and the mail is arrive to user mailbox nearly without delay. also user's blackberry also receive the mail nearly instant. However, there will have a few minutes delay to appear in outlook 2003 inbox.

my environment is as follow:
windows server 2003 AD
exchange server 2003
windows 7 client
outlook 2003 as the mail client use in the windows 7 client.

please help, thanks.
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Have you tried this with cached mode off?

Cached mode causes delays in the mail being displayed in Outlook.

Also have you tried Outlook /safe or /noextensions to verify it is not an add-in like client side Anti-virus that is scanning the message before allowing Outlook to display it?

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Hi, windows 7 is designed to work with outlook 2007 or newer, are you in a possition to give that a try?

nokypleaseAuthor Commented:

cache mode is off and is disabled by group policy.

the outlook 2003 is a standard default install, and i tested in a machine that do not have any anti-virus installed.

the delay is still exist.

any idea?? many thanks.
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nokypleaseAuthor Commented:
i finally figured out is windows firewall makes the delay
thanks for the update
Thanks for the points, you could of just accepted your own answer about the windows firewall as the solution though.
Thanks for the points noky. Just for info, in my domain I have the windows firewall disabled while connected to the domain, and up to the user while away, via GPO.
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