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  • Mail flow issue between two Exch 2003 servers

    Hi,
    My enviroment is EXCH 2003 (EXCH2003_1 - cluster based) and Exch 2010 (EXCH2010).
    I have migrated all users to the Exch 2010 except service accounts.
    Also public folders are migrated and deleted from Exch 2003.

    I had to add a second Exch 2003 (EXCH2003_2) to my enviroment to get rid of the Exchange cluster.

    Unfortunately this caused some mailflow issue - when the mail is sent from internal system using SMTP to the EXCH2003_1 cluster, the EXCH2003_1 push the mail to EXCH2003_2 and the mail is stuck in the Local delivery queue on EXCH2003_2.

    Seeing this I have created a SMTP connector between EXCH2003_2 and my CAS servers but this did not helped.

    What could be the reason of that and how can force it not to use EXCH2003_2 for mail delivery.

    BR
    Mike

  • #2
    Re: Mail flow issue between two Exch 2003 servers

    You shouldn't have created an SMTP/Send Connector. Remove that.
    In Exchange 2010 you need to create a new routing group connector. That is done from the Shell with new-routinggroupconnector command.

    Simon.
    --
    Simon Butler
    Exchange MVP

    Blog: http://blog.sembee.co.uk/
    More Exchange Content: http://exchange.sembee.info/
    Exchange Resources List: http://exbpa.com/
    In the UK? Hire me: http://www.sembee.co.uk/

    Sembee is a registered trademark, used here with permission.

    Comment


    • #3
      Re: Mail flow issue between two Exch 2003 servers

      I have done that (maybe I have expressed myself wrong) but it doesn't work as expected.

      See the Get-RoutingGroupConnector result (picture attached).

      However this is not used for some mail delivery.
      On the EXCH2003_1 cluster I can see that it creates the queue named EXCH2003_2.domain.com and push some mails to this.
      Attached Files

      Comment


      • #4
        Re: Mail flow issue between two Exch 2003 servers

        The connectors will be load balanced by default.
        You can remove the other connector if you like. There is also the chance the connector didn't create properly. Therefore removing them all and recreating them can help. You can even have one connector with multiple servers on each end.

        Simon.
        --
        Simon Butler
        Exchange MVP

        Blog: http://blog.sembee.co.uk/
        More Exchange Content: http://exchange.sembee.info/
        Exchange Resources List: http://exbpa.com/
        In the UK? Hire me: http://www.sembee.co.uk/

        Sembee is a registered trademark, used here with permission.

        Comment


        • #5
          Re: Mail flow issue between two Exch 2003 servers

          Did that.
          Removed all Routing Group Connectors and added only two:
          EXCH2003-2010 with two 2003 servers as source and two CAS servers as Target and the oposite one.
          It did not helped.

          Comment


          • #6
            Re: Mail flow issue between two Exch 2003 servers

            I have noticed that in the new Exchange 2003 there is a Public Folder Store.
            I have removed Public Folders from that server right after installation but it seems there is a mail store which I need to remove as well.

            I suspect that this disturbs the mailflow because all mails catched in the Local delivery queue are sent to e-mail enabled public folders.

            But how can I remove that store? I have tried and I cannot - there is a message saying that the folder contains folder replicas. I have not enable any replica of those so where can I disable it?

            Comment


            • #7
              Re: Mail flow issue between two Exch 2003 servers

              All Public Folder databases have replicas - system folders.
              If the server hosts any mailboxes then you cannot remove the public folder database. It is required for the correct operation of Exchange.

              Simon.
              --
              Simon Butler
              Exchange MVP

              Blog: http://blog.sembee.co.uk/
              More Exchange Content: http://exchange.sembee.info/
              Exchange Resources List: http://exbpa.com/
              In the UK? Hire me: http://www.sembee.co.uk/

              Sembee is a registered trademark, used here with permission.

              Comment


              • #8
                Re: Mail flow issue between two Exch 2003 servers

                I have removed all mailbox from that server. There are only:
                • SMTP (server_name)
                • System Attendant
                • SystemMailbox
                I do not know if I need to remove them before I delete Public folder store.
                But I cannot delete it still.

                Comment


                • #9
                  Re: Mail flow issue between two Exch 2003 servers

                  Those are mailboxes, not system folders.
                  The presense of those mailboxes will not stop you from removing the public folders. You need to replicate off the system folders.

                  Simon.
                  --
                  Simon Butler
                  Exchange MVP

                  Blog: http://blog.sembee.co.uk/
                  More Exchange Content: http://exchange.sembee.info/
                  Exchange Resources List: http://exbpa.com/
                  In the UK? Hire me: http://www.sembee.co.uk/

                  Sembee is a registered trademark, used here with permission.

                  Comment


                  • #10
                    Re: Mail flow issue between two Exch 2003 servers

                    OK.
                    ...You need to replicate off the system folders...
                    And how can I do that?

                    On the Exch 2010 PF Management console I found some System Public folders which were hosted on EXCH2003_2, but not replicated.
                    I have add the EXCH 2010 to the server replicas, force to update the content from EXCH2003_2 and deleted the EXCH2003_2 server from replica server list.
                    This did not help - I still cannot remove the Public folder Store form EXCH2003_2.

                    Comment


                    • #11
                      Re: Mail flow issue between two Exch 2003 servers

                      Stop looking at the Exchange 2010 tools. That doesn't help.
                      You must do this all from Exchange 2003. In ESM look at the Public Folder instances. If there is anything listed in there then Public Folder database cannot be deleted.

                      How long did you wait? I doubt very long. Public Folder updates and replication is very slow. If you didn't wait a week, then you didn't wait long enough (no I am not kidding, I did say a WEEK).

                      You can use the Move All Replicas command in Exchange 2003 to move the public folder database content across as well - again until instances is empty you cannot continue.

                      Simon.
                      --
                      Simon Butler
                      Exchange MVP

                      Blog: http://blog.sembee.co.uk/
                      More Exchange Content: http://exchange.sembee.info/
                      Exchange Resources List: http://exbpa.com/
                      In the UK? Hire me: http://www.sembee.co.uk/

                      Sembee is a registered trademark, used here with permission.

                      Comment


                      • #12
                        Re: Mail flow issue between two Exch 2003 servers

                        Hi,
                        I amange to fix it.
                        Under Exch 2003 Management console uder First Administrative Group - Server name - there was Queues, First Storage Group, Protocols and "Folder".
                        Under Folder there was nothing (I have deleted all public folders before).

                        To fix the issue I had to delete the "Folder" itself.

                        Now mailflow works as expected - all internal goes through the routing group connector and all external mails goes out throught the SMTP connector.

                        Thank you Simon for your time and support.

                        Comment

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