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Relaying Prob. with Exchange 2003 but with Exchange 2000 it's ok

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  • Relaying Prob. with Exchange 2003 but with Exchange 2000 it's ok


    I do not know if this has been already asked...I have searched and didn't find a topic about my problem.

    I have installed an Exchange2003 (SRV9w) to our domain. We already have Exchange 2000 on the domain controler W2K (srv1w). So I am in middle of the migration.

    We have GFI MailEssentials on SRV8w working fine since 2 years now.

    The Exchange2003 install did go well without prob. including forestprep and domainprep were run successully at first place.

    So, I have moved my how mailbox from srv1w to srv9w. And started testing.

    TESTs from an userX on srv1 Exchange 2000 with outlook 2000 and 2003.
    Sending and receiving internal and external mail are ok.

    TESTs from my user on srv3 Exchange 2003 with outlook 2000 and 2003.
    Receiving and Sending internal mail are ok.
    Receiving external mail are ok.
    Sending external mail gets error SMTP 500 5.7.1

    The following recipient(s) could not be reached:

    '[email protected]' on 11/9/2007 5:31 PM
    You do not have permission to send to this recipient. For assistance, contact your system administrator.
    < #5.7.1 smtp;550 5.7.1 Unable to relay for [email protected]>

    I did verify the "Default SMTP Virtual Server" are identical on both servers.
    In the first routing group, connectors, GFI MailEssentials I added srv1w and srv9w to the brigdehead list and all mail are forwarded to srv8w (GFI)


  • #2
    Re: Relaying Prob. with Exchange 2003 but with Exchange 2000 it's ok


    It's to let you know, I found the problem and fixed it. The security for relaying was not permitted for authenticated users.

    Works like a charm now.



    • #3
      Re: Thanks for sharing

      Thanks for sharing your answer with us! I'm sure others will also benefit from knowing what was wrong and how you fixed it.


      Daniel Petri
      Microsoft Most Valuable Professional - Active Directory Directory Services