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  • Cannot send from secondary domain from exchange 2003

    Hi All,

    I am having trouble sending emails from a secondary domain in Exchange 2003 on a SBS2003 machine.

    The primary domain domain1.com send and receives fine.

    The secondary domain domain2.com receives fine but won’t send!!

    What i have done so far is add the domain in the Recipient Policy.

    The users all now have domain2 as a domain emails address in the address tab in the users properties.

    On one user i have un-ticked the update email addresses based on recipient policy and made domain2.com as the primary domain.

    When i do this all emails sent out from this user bounce back with the following NDR:

    There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
    <domain1.com #5.5.0 smtp;550 <[email protected]>... Not permitted>


    Any ideas or has anyone solved this problem before? Do i need to have a separate send connector?

  • #2
    Re: Cannot send from secondary domain from exchange 2003

    is this happening with all domains you're trying to send to, or just the one ?
    Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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    • #3
      Re: Cannot send from secondary domain from exchange 2003

      To any domain i am trying to send to.

      I can send to any domain using domain1.com

      Cannot send to any domain using domain2.com

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      • #4
        Re: Cannot send from secondary domain from exchange 2003

        you should not need a separate send connector. It seems like a permissions problem - your connector is not accepting mail to relay from the domain2.com, it only thinks it's domain1.com

        this doesn't make alot of sense though, as it should relay regardless, if the user is authenticated. We had the exact same scenario, a .com and .com.au domain and could send using either...
        Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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        • #5
          Re: Cannot send from secondary domain from exchange 2003

          Are you using a smart host?
          The error that you have posted isn't an Exchange error, and if it is happening with all email, it would tend to indicate that something is blocking it.
          If you are using a smart host (for example your ISPs SMTP Server) you might have to tell them you want to use a second domain and get them to add it to their list.

          Remember that Exchange 2003 cannot route email based on the sending domain, only on the recipient.

          Simon.
          --
          Simon Butler
          Exchange MVP

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

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