Outlook Slow after installing Firewall

V

Venkat

Hi all

We have a subsidiary company's network that connects to our network to access mail over a gigabit link.
Mail is hosted in Exchange 5.5 server that is common for both the networks.
But the subsidiary is having a seperate Domain under the common AD forest.

We implemented a Firewall to isolate the 2 networks and ever since we have one problem.

In the XP PCs Outlook 2000 is running very slow. Especially, when a user right-clicks on a file and select "Send to mail recipient as attachment" it takes 3 minutes for the window to appear. But the problem is not seen in Win98/2000 PCs in the same network with Outlook 2000.

The firewall is configured to allow all traffic from the clients to the Exchange server and the Domain controller and vice-versa and no denials are happening.
I have tried modifying the RPC client protocols and the Exchange provider. Also checked the Name resolution. Still no solution.

Can somebody help me in this?

Regards
Venkat
 

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