Allow SBS 2003 Exchange to ONLY recieve from anotherSBS 2003 Exchange Server

Discussion in 'Windows Small Business Server' started by Dirk-Thomas Brown, May 18, 2005.

  1. Guess I am lazy today,

    I need to have an SBS 2003 server ONLY allow email from another domain to be
    sent to it. The other domain is also an SBS 2003. Where is the setting
    located and how can this be accomplished.

    Dirk-Thomas
     
    Dirk-Thomas Brown, May 18, 2005
    #1
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  2. Dirk-Thomas Brown

    AllenM Guest

    Hey Lazy,
    If it weren't so easy I'd wake your ass up let you figure it out for
    yourself. So while you are sleeping think about this.
    Go to ESM. Connectors/Small Business SMTP. Properties/Delivery Restrictions.
    "By default messages from everyone are" -> Change this to "Rejected" and the
    "Accept messages from" is where you would input that other domain. Have a
    nice nap.
     
    AllenM, May 18, 2005
    #2
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  3. Woke up...

    Ok, really... so I set it to reject all and then I want to accept only from
    "companyname.com" but it will not allow that because its not one of the
    available options/objects (obviously can't find the companyname.com).

    I don't think so but thanks anyway... Going back to sleep...

    Dirk-Thomas
     
    Dirk-Thomas Brown, May 18, 2005
    #3
  4. Dirk-Thomas Brown

    Matt Gibson Guest

    And realize if I know your domain you're accepting from, I can still spoof
    messages using this filtering technique.

    Matt Gibson - GSEC
     
    Matt Gibson, May 18, 2005
    #4
  5. How about by IP only maybe?

    Dirk-Thomas
     
    Dirk-Thomas Brown, May 18, 2005
    #5
  6. Dirk-Thomas Brown

    Matt Gibson Guest

    That'd work.

    I mean, if you don't want ANY mail coming from anywhere execpt another
    exchange server (and you're running ISA), just close off port 25 to everyone
    but that server.

    Matt Gibson - GSEC
     
    Matt Gibson, May 18, 2005
    #6
  7. Dirk-Thomas Brown

    AllenM Guest

    Wake your butt up. Try this then.
    ESM/Servers/Servername/Protocols/SMTP/Defualt SMTP Virtual Server.
    Properties/Access/Connection.
    Select "Only the list below" and click on the "ADD" button. You can input
    your IP or Domain here.
     
    AllenM, May 18, 2005
    #7
  8. Of course, if Matt hacks the other SBS server so that it relays, he'll
    spam you through it.

    Or, he can DoS you to death by spamming the other server with mail that
    appears to come from you.

    <g>
     
    Steve Foster [SBS MVP], May 18, 2005
    #8
  9. Dirk-Thomas Brown

    Matt Gibson Guest

    *Sigh*

    Do you ALWAYS have to give it away?

    I get them all lined up, and then you go and ruin things for me.

    *grin*

    Matt Gibson - GSEC
     
    Matt Gibson, May 18, 2005
    #9

  10. I'm just trying to make the challenge more interesting... <g>
     
    Steve Foster [SBS MVP], May 19, 2005
    #10
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