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Outlook problems connecting to Exchange server

I am using client version 5.0, PIX 506e and Microsoft IAS to vpn into a corporate network. Once connected some users have problems with their Outlook unable to connect to the Exchange server. Trying to figure out if I need to make a configuration change, or if a Microsoft issue. Thanks.

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Bronze

Re: Outlook problems connecting to Exchange server

The problem could be because of MTU sizing. Reduce the MTU sizing of the tunnel on both ends till the end users do not face any such connectivity problems. Packet reassembly and fragementation are some of the main causes for connectivity loss.

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