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Edge subscription - 51 4.4.0 Primary target IP address responded with: "451 5.7.3 Cannot achieve Exchange Server authentication." RRS feed

  • Question

  • Hi,

    recently I have subscribed to edge server, since then we receive no inbound mail from internet. Sync was successful as I can see accepted domains replicated to edge server.

    I can telnet to smtp port from edge to hub transpot.

    I can also successfully telnet from internet to edge server on 25 port (changed internal IP to edge server on TMG publishing rule).

    In queue viewer I can see messages with the error:

    51 4.4.0 Primary target IP address responded with: "451 5.7.3 Cannot achieve Exchange Server authentication."


    • Edited by Aurimas N Tuesday, September 18, 2012 12:04 PM
    Tuesday, September 18, 2012 12:03 PM

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