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Exchange 2010 Connectivity Test Failed

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  • Exchange 2010 Connectivity Test Failed

    I have an Exchange 2010 mail server hosting all roles. Its used for sending and receiving emails into our domain.
    I noticed some delivery queues in recent times to yahoo, hotmail, gmail and other SMTP domains. I therefore run the ExRCA on the server.
    I noticed some errors, for SPF and also the PTR record sections.
    After some research I have successfully created the SPF record using the command v=spf1 mx -all in the TXT record. Everything seems okay now for SPF.

    How do I create the PTR record for my NATed public exchange server address?
    Do I need to contact my ISP or create this locally on my local DNS server.
    The error I receive is as follows:

    Performing Outbound SMTP Test
    The outbound SMTP test failed.
    Test Steps
    Attempting reverse DNS lookup for IP address, (generic public IP).
    Reverse DNS lookup failed.
    Additional Details
    IP address doesn't have a PTR record in DNS.

  • #2
    Re: Exchange 2010 Connectivity Test Failed

    You need to contact your ISP who own your subnet and ask them to create a PTR record in public DNS for your IP address. The PTR record will be the opposite of your A record. IE if points to Then your PTR record would be which points to


    • #3
      Re: Exchange 2010 Connectivity Test Failed

      Thanks a lot for the clarification. I have contacted them and they are in the process of responding.