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Unable to send mail to Exchange 2010 in Parent domain.

Discussion Unable to send mail to Exchange 2010 in Parent domain.

  • Monday, February 18, 2013 2:03 PM
     
     
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    Hi, 

    I recently Installed an Exchange 2010 server in a child domain. For some reason I am able to send and receive to all kind of domain exempt to the Parent domain. 

    I already tried the setsnp command, also tried to telnet, HELO, DNS, but still no luck. I also checked the spam filter and everything seems to be correct. 

    I found the following MS Exchange Transport event that might give some clue. Please help. Thanks!

    Event Log message:

    Outbound uthentication failed with error NoAuthenticatingAuthority for Send connector Intra-Organization SMTP Send Connector. The authentication mechanism is ExchangeAuth. The target is SMTPSVC/kny0855.na3.gaia.lcl.


    • Edited by M Lyrics Monday, February 18, 2013 2:04 PM
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  • Tuesday, February 19, 2013 4:07 AM
     
     
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    On Mon, 18 Feb 2013 14:03:36 +0000, M Lyrics wrote:
     
    >I recently Installed an Exchange 2010 server in a child domain. For some reason I am able to send and receive to all kind of domain exempt to the Parent domain.
    >
    >I already tried the setsnp command, also tried to telnet, HELO, DNS, but still no luck. I also checked the spam filter and everything seems to be correct.
     
    What did you try with the setspn command? Do you find a SPN on the
    server that matches the FQDN on the server's Receive Connector? Do you
    find one that matches the host portion of the FQDN?
     
    Are the date and time on both Exchange servers in agreement? If they
    vary by more then 5 minutes they won't be able to authenticate.
     
    Is port 88/udp and 88/tcp open in both directions between the Exchange
    servers and between the Exchange servers and all DCs in the forest?
     
    Do you have any firewalls or SMTP proxies between the two Exchange
    servers that interfere with the keyword responses to the EHLO? When
    you look at the SMTP protcol logs on the sending server do you see it
    trying to authenticate with the receiving server? Do you see the
    receiving server getting the authentication data?
     
     
    >I found the following MS Exchange Transport event that might give some clue. Please help. Thanks!
    >
    >Event Log message:
    >
    >Outbound uthentication failed with error NoAuthenticatingAuthority for Send connector Intra-Organization SMTP Send Connector. The authentication mechanism is ExchangeAuth. The target is SMTPSVC/kny0855.na3.gaia.lcl.
     
    Do you find SMTPSVC/kny0855.na3.gaia.lcl in the set of SPNs on the
    server that uses kny0855.na3.gaia.lcl as its FQDN?
     
    ---
    Rich Matheisen
    MCSE+I, Exchange MVP
     
    --- Rich Matheisen MCSE+I, Exchange MVP