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One Front End with 8 Back End Exchange Servers

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  • One Front End with 8 Back End Exchange Servers

    Our company has one front end and 8 back end exchange servers (SP2) running on win 2003 SP1 with ISA 2004 SP1. What would be your recommendation for:
    1. Whether to use ISA or Exchange to provide form based authentication.
    2. I see that our front end has front end server option selected but not on those back end. Do I need to select the back end server option on all back end servers?


    Thanks for your help.

    David

  • #2
    Re: One Front End with 8 Back End Exchange Servers

    1) ISA 2004 has FBA capabilities, if you're using a DMZ to allow access from outside the LAN I suggest you look into that feature. However, there might be some issues with languages supported by ISA, where on EX2003 you can get more languages for the logon screen. Also, look into the RPC issues from the DMZ.

    2) Only the F/E is selected, not the B/E. However, note that there is a recommendation to use 1 CPU of F/E for every 4 CPUs on the B/E. If you have 8 servers with 1 CPU each as B/E, you should use 2 F/E servers with one CPU each, or one server with 2 CPUs.
    Cheers,

    Daniel Petri
    Microsoft Most Valuable Professional - Active Directory Directory Services
    MCSA/E, MCTS, MCITP, MCT

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