OWA and Outlook Issue - Microsoft Exchange

Check if Instant Messaging is enabled in Microsoft Outlook and disable it.
Check out article 327675 HOW TO: increase Outlook Web Access Performance and
311154 XCCC: Outlook Web Access Segmentation.
293650 OL2002: changing the outlook cancel request dialog box behavior
299485 OL2002: Excessive Network Traffic When Cancel Request Dialog Box
Appears
824118 "Outlook is retrieving data" error message received repeatedly

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Regards,

Marina

"Craig J. Dalebout" <anonymous@discussions.microsoft.com> schreef in bericht
news:06d201c3df18$fa2e18c0$a101280a@phx.gbl...
> I am experiencing a problem with both OWA and Outlook
> connecting to an Exchange server in a DMZ. We have a
> Sonicwall Pro 100 and I've opened Port 80 into the DMZ. I
> have opened the appropriate ports from the DMZ to the
> LAN. I am experiencing major performance problems with
> both OWA and Outlook. Outlook clients connect to the DMZ
> from the LAN, and OWA clients connect from the WAN.
>
> With OWA, I experience major delays before the mailbox
> actually loads in my web browser - the wait can be as long
> as 5 minutes. On the LAN side, the Outlook clients
> experience intermittent delays in accessing the Exchange
> server. When the client experiences one of these delays,
> Outlook 2002 pops up with a dialog box "Requesting
> Information from Exchange Server." I have opened all
> ports from the DMZ into the LAN to test for connectivity
> issues and we are experiencing the same behavior. I have
> completed Pings, and RPC Ping diagnostics and everything
> checks out.
>
> Does anyone have any ideas as to what the problem might
> be? I've read and followed several technet articles, but
> the problem still remains.