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  • Adding MX-record for different domain

    We have an Exchange server 2003 that has to send some mails using TLS-encryption. This is working for most partners, but one of them receives his mail on a third-party mailserver for spamfiltering purposes.
    This third party is not willing to configure their server to accept TLS-encrypted mail.

    So I want to add an MX-record to my(internal) DNS server that sends the mail for this domain directly to the mailserver, not to the spamfilterserver. My partner has agreed to this, and has opened his router/firewall for mailtraffic from my mailserver.

    Since the domainname of my partner is completely different from my domainname I think I have to add a zone. But the hostname of the mailserver that I want to approach has a different suffix than the domainname of the mailserver.

    Example:
    my domainname: domain1
    partners domainname: domain2 (email: @domain2.nl)
    mailserver: mail.domain3.nl

    Do I add multiple zones? 1 zone for domain2, 1 zone for domain3
    Do I add an MX to the zone for domain2 and than an Host (A) to the zone for domain3?

    Or is this am impossibillity??

  • #2
    Re: Adding MX-record for different domain

    You don't need to edit DNS you just need to create a new SMTP connector in Exchange that has an address space of their domain.

    Have a look through this:
    http://www.amset.info/exchange/smtp-connector.asp
    cheers
    Andy

    Please read this before you post:


    Quis custodiet ipsos custodes?

    Comment


    • #3
      Re: Adding MX-record for different domain

      True,

      but that was not what I wanted to do.

      I wanted to try to resolve it by using DNS.

      Comment


      • #4
        Re: Adding MX-record for different domain

        If the email goes through the Exchange Org it will use its default SMTP connector (or whichever matches). What is the reason for not wanting to create a new one? They were designed specifically for this purpose.
        cheers
        Andy

        Please read this before you post:


        Quis custodiet ipsos custodes?

        Comment


        • #5
          Re: Adding MX-record for different domain

          I have to agree with above - why do you want to use DNS?
          It is a lot more complicated and it means you are responsible for maintaining a zone that is not yours.

          You would need to create a complete copy of the zone - not just the MX records, but any other host records. Furthermore if the IP addresses change then you will not know until you do an nslookup from an external machine.

          SMTP connectors are designed for this. They allow you to direct email in a direction different to what Exchange can find via DNS or is being directed to another smart host.

          Simon.
          --
          Simon Butler
          Exchange MVP

          Blog: http://blog.sembee.co.uk/
          More Exchange Content: http://exchange.sembee.info/
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          Sembee is a registered trademark, used here with permission.

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