Exchange 2003 settings

Posted on 2006-05-02
Last Modified: 2010-03-19
Where in our Exchange Server 2003 can we assure that open relay is not being used and also when we try to run the helo command to check that Exchange is working, we get a message that it is not a recognized command?  
Question by:regsamp
    LVL 32

    Assisted Solution

    1) Open ESM
    2) Locate your SMTP server instance(s) and right-click Properties.
    3) Choose the Access tab.
    4) Click the Relay button.
    5) I use "Only the list below" where I put our local subnet plus our secondary email server.  I also choose the "Allow all computers which authenticate...." checkbox.
    LVL 7

    Accepted Solution

    To check the open relay go to Servers->yourservername->protocols->smtp->default smtpserver->go to properties access tab-.CLICK ON RELAY and make sure that open relay is not turned on.
    how are you using helo command.

    Say you want to send an email from command prompt.

    you domain name is and your mx record is

    then you can test your exchange server as follows:

    telnet 25
    Mail from:

    type your text and in a seperate line put a .

    make sure that you don't mis type and re-type

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