Question

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  • #2150500

    Exchange 2007 receive problem

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    by blichtig ·

    I had my email host provider move my MX record of Northernpharmacy.com to point towards my firewall and we are having problems receiving email but not sending. The sender gets a error of Remote host said: 550 5.7.1 Unable to relay for blichtig@northernpharmacy.com Giving up on 63.139.89.78. Anyone have idea why the exchange server is not receiving mail correctly? Any detailed instructions on how to fix this. I thought all the bugs but when they switch the mx record it will not receive mail on the Exchange 2007 server.

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    • #2926151

      Clarifications

      by blichtig ·

      In reply to Exchange 2007 receive problem

      Clarifications

    • #2926149

      Firewall?

      by jellimonsta ·

      In reply to Exchange 2007 receive problem

      You will want to ensure the IP address your MX record was changed to, is able to forward your inbound mail to the Exchange server.
      If it is a small firewall, you will want to make sure it forwards incoming SMTP to the internal address of your server.
      Otherwise, if you have a pool of public IP addresses, you would be better assigning a static translation on your firewall of one of the pool of addresses, to the internal address of your Exchange server.
      You would then want to ensure you allow SMTP through, obviously.
      Regards.

      • #2925647

        change

        by blichtig ·

        In reply to Firewall?

        It was changed. It is something in the hub transport that is not allowing emails threw.

    • #2925634

      re: resolving addresses…

      by thumbsup2 ·

      In reply to Exchange 2007 receive problem

      Northernpharmacy.com resolves to 72.32.133.201 and pings fine. The sender’s rejection shows 63.139.89.78 which times out. So, somebody’s MX records haven’t been updated somewhere. Are you sure the host is forwarding?

    • #2925633

      What has changed?

      by netman1958 ·

      In reply to Exchange 2007 receive problem

      You said:
      “I had my email host provider move my MX record of Northernpharmacy.com to point towards my firewall”
      What did the original MX record point to? Is this Exchange server a new installation or one that was working OK before?

    • #2925627

      SMTP conversation

      by netman1958 ·

      In reply to Exchange 2007 receive problem

      C:\Documents and Settings\netman>nslookup
      Default Server: sbs1.****.local
      Address: 10.1.82.1
      > set type=mx
      > northernpharmacy.com
      Server: sbs1.****.local
      Address: 10.1.82.1
      Non-authoritative answer:
      northernpharmacy.com MX preference = 10, mail exchanger = exchange2007.northe
      rnpharmacy.com
      exchange2007.northernpharmacy.com internet address = 63.139.89.78
      > exit

      C:\Documents and Settings\netman>telnet 63.139.89.78 25
      220 exchange2007.northernpharmacy.com Microsoft ESMTP MAIL Service, Version: 6.0
      .3790.3959 ready at Thu, 17 Jul 2008 09:56:48 -0400
      ehlo sbs1.****.com
      250-exchange2007.northernpharmacy.com Hello [*.*.19.3]
      250-TURN
      250-SIZE 2097152
      250-ETRN
      250-PIPELINING
      250-DSN
      250-ENHANCEDSTATUSCODES
      250-8bitmime
      250-BINARYMIME
      250-CHUNKING
      250-VRFY
      250 OK
      mail from: 250 2.1.0 postmaster@****.com….Sender OK
      rcpt to:
      550 5.7.1 Unable to relay for blichtig@northernpharmacy.com
      quit
      221 2.0.0 exchange2007.northernpharmacy.com Service closing transmission channel
      Connection to host lost.
      C:\Documents and Settings\netman>

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