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outlook client connection to exchange 5.5 server behind PIX501 - SLOW

Hello,

Problem:

when Outlook 2000 client connects to an exchange 5.5 server behind the pix501 firewall, it gets real slow for the authentication. Outlook 2000 is sitting on windows 2000. I also try this on win98 with outlook 2000, it connects OK. Problem only happens on win2000 and XP!

Is this windows networking problem or something is misconfigured?

Thanks,

Travis,

2 REPLIES
Cisco Employee

Re: outlook client connection to exchange 5.5 server behind PIX5

Hi Travis,

Seems like an MTU issue to me, kindly try lowering the MTU on the machine and see what happens, you can use the Dr. TCP freeware for modifying the MTU.

Thanks,

Aamir

New Member

Re: outlook client connection to exchange 5.5 server behind PIX5

Another solution I use is to not run in connected mode of outlook across VPN regardless of model PIX or VPN vendor. Setup work offline mode and set to sync every 15 mins or another time you are comfortable with.

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