Change HostName of Echange 2003 server

Posted on 2007-08-02
Last Modified: 2013-11-30
WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). If your mailserver sends out E-mail using this domain in its EHLO or HELO, your E-mail might get blocked by anti-spam software. This is also a technical violation of RFC821 4.3 (and RFC2821 4.3.1). Note that the hostname given in the SMTP greeting should have an A record pointing back to the same server. Note that this one test may use a cached DNS record. claims to be host [but that host is at (may be cached), not]. <br />

We get this warning from DNSStuff's dns report. How can I change my exchange 2003 server's host name to only show
Question by:VictorJuri
    LVL 9

    Accepted Solution

    In Exchange System Manager
    Go to Protocols > SMTP
    Right click your SMTP Virtual Server > Properties
    Go to the Delivery tab > Advanced
    In 'Fully-qualified domain name' enter
    LVL 39

    Expert Comment

    nightmare2 is spot on, here is a picture version of the same thing;


    Expert Comment

    I'd like to add that you have to restart the Microsoft Exchange Routing Engine for the change to take effect.

    Hope that helpe anyone,
    Brad Nelson

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