RE: SMTP Service in private DMZ OK?

From: Jolyon Wharton (
Date: 01/15/04

  • Next message: Thomas Kerbl: "Disable NTLM on W2k"
    Date: Thu, 15 Jan 2004 10:05:38 -0000
    To: "A. Bluecoat" <>, <>


    You really need to ensure that it does not become an open relay. Are
    you going to use IIS to do this job? If so then within the SMTP server
    properties -> Relay Restriction setting un tick the option 'Allow all
    computers which successfully athenticate to relay, regardless of the
    list above'. It also an idea to allow it only to relay through If you have any doubts about relaying then you can check you
    relay host using

    Jolyon Wharton
    Software Development Executive

    -----Original Message-----
    From: A. Bluecoat []
    Sent: 13 January 2004 23:14
    Subject: SMTP Service in private DMZ OK?

    Hi all,

    What kind of trouble can I get into by installing the SMTP service on a
    server in a private DMZ (double hop DMZ)? It'll be used for a web app.
    it be used as a relay? Is there some way to secure it? The box is
    hardened to live in a DMZ. Thanks for any info.

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  • Next message: Thomas Kerbl: "Disable NTLM on W2k"

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