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  • Exchange server 2003 routing

    I have an organization with two exchange servers. One at the head office the other at a remote location. my problem i can send emails both internally and externally from the remote site. if users in the head replies to the remote location it works fine. but no external emails can get to the remote site. even when an outside user replies to email sent from external site. Also in exchange system manager i can see servers in HQ but in HQ i cannot see servers in the remote site. they are in the admin group and sharing the same domain name [email protected]

    thank you in advance
    Last edited by carribbrother; 19th January 2010, 03:41.

  • #2
    Re: Exchange server 2003 routing

    Are they in the same exchange organisation or in two separate organisations, each with the same name?
    Tom Jones
    MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
    PhD, MSc, FIAP, MIITT
    IT Trainer / Consultant
    Ossian Ltd
    Scotland

    ** Remember to give credit where credit is due and leave reputation points where appropriate **

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    • #3
      Re: Exchange server 2003 routing

      thank you for your reply

      they are in the same organization.

      Comment


      • #4
        Re: Exchange server 2003 routing

        First thing you need to verify is that the servers can see each other on port 25.
        Telnet to port 25 of the other server using servername, FQDN and IP address:

        telnet server 25
        telnet server.example.com 25
        telnet 192.168.1.1 25

        The most common reason for a failure of email delivery is a smart host on the SMTP virtual server. If you have one set then it MUST be removed. If a smart host needs to be used for external email then it needs to be set on an SMTP connector. If you want to have the servers use their own routes for external email then you will need to put them in to Routing Groups, create a routing group connector and then put an SMTP connector in each routing group.

        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.

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        • #5
          Re: Exchange server 2003 routing

          Maybe i did not explain the situation well

          I have a single forest multiple domains setup. domain A is connected to Domain B via a vpn link.

          I can administer users in domain b from ADUC in domain A.
          I can ping and telnet to the server in domain A and Domain B

          I have Microsoft exchange setup in domain A (headquarters. hq.com)
          I have installed a second exchange server in Domain B (remote site Hq.com)

          all email traffic must flow from Domain A to Domain B for discovery and archiving purposes.

          When i create a user in Domain B the user has an exchange mailbox and an email address [email protected]. That user can send email to anyone in domain A and to the outside world (internet), However if anyone tries to reply to [email protected] they get an undeliverable message from the postmaster.

          thank you again for your help.

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          • #6
            Re: Exchange server 2003 routing

            Can you post the NDR here?

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            • #7
              Re: Exchange server 2003 routing

              Thank you for your reply


              This is an automatically generated Delivery Status Notification.

              Delivery to the following recipients failed.

              [email protected]

              Reporting-MTA: dns;Mail.hq.com
              Received-From-MTA: dns;qmta01.westchester.pa.mail.comcast.net
              Arrival-Date: Wed, 20 Jan 2010 12:39:05 -0500

              Final-Recipient: rfc822;[email protected]
              Action: failed
              Status: 5.1.1

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              • #8
                Re: Exchange server 2003 routing

                Were the users in the remote site originally in the home office on the original Exchange server?

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                • #9
                  Re: Exchange server 2003 routing

                  Answer to your ? is no they were not.

                  these are newly created users in the remote office.

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                  • #10
                    Re: Exchange server 2003 routing

                    As the two servers are in different Forests, as far as Exchange is concerned, the other forest is just another SMTP server.
                    That means you are sharing the SMTP address space.
                    There are various ways of dealing with that.
                    http://support.microsoft.com/kb/321721

                    As for archiving, if you are using anything connected to Exchange for archiving then that isn't going to happen for email from the other forest. Email that is sent through Exchange from another SMTP service effectively "bounces" off the server, it will not be archived. If you are using something outside of Exchange (appliance for example) then that can just be configured as a smart host on an SMTP Connector, in much the same way as the first Exchange server.

                    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


                    • #11
                      Re: Exchange server 2003 routing

                      Originally posted by Sembee View Post
                      As the two servers are in different Forests, as far as Exchange is concerned, the other forest is just another SMTP server.
                      That means you are sharing the SMTP address space.
                      There are various ways of dealing with that.
                      http://support.microsoft.com/kb/321721

                      As for archiving, if you are using anything connected to Exchange for archiving then that isn't going to happen for email from the other forest. Email that is sent through Exchange from another SMTP service effectively "bounces" off the server, it will not be archived. If you are using something outside of Exchange (appliance for example) then that can just be configured as a smart host on an SMTP Connector, in much the same way as the first Exchange server.

                      Simon.
                      It sounded to me like the Exchange servers are in the same Forest and the same Administrative Group.

                      Comment


                      • #12
                        Re: Exchange server 2003 routing

                        For some reason I read the posting above as multiple forest, not single forest.

                        The fact that the servers cannot see each other would tend to point to a problem outside of Exchange, possible a domain replication issue. That means Exchange is unable to route email to the other server because it doesn't know it is there.

                        I hate to say this, but I think this is much too complex for a forum - it needs to be looked at either by a consultant or Microsoft, because it may well require extensive work on the domain, not just Exchange. Worst case scenario is that the second site domain and Exchange server has to be rebuilt.

                        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


                        • #13
                          Re: Exchange server 2003 routing

                          I think you're right, Simon. Sometimes there's no substitute for having your eyes and hands on the actual systems involved.

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