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want to keep existing email ids on exchange while domain is changing

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  • want to keep existing email ids on exchange while domain is changing

    Hi, We are in a process to change our company's internal domain from mycompany.co.uk to mycompany.local. every user in the company has [email protected] id and we want to keep these email ids as it is . what will be the best way to do it. please help

    We do have our company's domain registered on the internet.

  • #2
    Re: want to keep existing email ids on exchange while domain is changing

    I hope you aren't planning to rename your Windows domain? If you are, then your Exchange data recovery plans need to be well planned as you will use them. I have never heard of a domain rename where Exchange was involved taking place successfully. The general consensus in the Exchange community is don't change the name of the domain when Exchange is involved.

    Retaining mail IDs is not a problem, but as you haven't outlined exactly what you are going to do (The methods involved), how many users, and whether the usernames or full name information of the users matches their email addresses, further advice is not possible.

    At its most basic you could have a copy of the email addresses in a spreadsheet for manual or scripted importing, but I have no idea knowing if that is appropriate for you.

    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: want to keep existing email ids on exchange while domain is changing

      Thanks Simon for your reply.

      Yes we are planning to rename our windows domain name from mycompany.co.uk to mycompany.local. there are 200 plus users in our company and each user in the company has mycompany.co.uk email ID. the IDs in exchange matches the usernames in ADS.


      what we are trying to do is..

      renaming our windows domain from mycompany.co.uk to mycompany.local because we are having so many DNS issues and Policy conflicts in our domain as the current ADS was built in 2004 and since then everyone keep on adding things in it. I just dont know what will happen if I change the windows domain to mycompany.local. as I want to keep my existing exchange server (which is configured to mycompany.co.uk) with new windows domain along with user's email IDs.

      I hope u do have an idea what we are planning to do now. if you can suggest anyother way that will be very much appriciated.

      Comment


      • #4
        Re: want to keep existing email ids on exchange while domain is changing

        Unless you are building a new domain, I wouldn't go through the hassle of changing the domain for the reasons that you have stated.

        The potential for downtime is too great, particularly with Exchange involved. You will probably knock out a significant part of the company operations for a day or two - I did a new domain for 70 users last year and it was three days before the entire company was fully functional again. Fortunately it was a charity and we timed it when most staff were doing other things.
        Exchange will stop working - I can almost guarantee that, so will need to be restored or you will have to extract the content out to PST files and re-import it, then setup all permissions etc from scratch.

        I deploy all of my domains with a real domain and do not have any DNS issues. It simply a matter of ensuring that you get setup correctly with external hosts, forwarders etc. If you own the public name then it shouldn't be too hard. You have to ensure that your internal DNS contains the same hosts as the external DNS and that you are not using external DNS anywhere in the network configuration. If you are using VPNs then ensure that the VPN technology is pushing out your DNS servers as the DNS and not relying on the client's local DNS, which will be ISP based.
        I also see many problems that are put down to DNS as being IP address related. So many networks use 192.168.0.x or 192.168.1.x which conflicts with home routers. The problem is put down to DNS, when it isn't, it is a routing issue. Use something else other than those two addresses and things improve.

        The simple fact is that with that number of users and the very high chance of it failing, I could not justify the change on business or technical grounds and if you presented the plan to anyone in the business they would probably reject it - unless you volunteered to work over entire Christmas when it wouldn't affect the company, recreating everything by hand, trying to do three years of network changes in four or five days.

        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: want to keep existing email ids on exchange while domain is changing

          we are going to build a new domain from scratch. we will create everything new but we just want to keep our existing exchange server with this new domain. is it possible to use existing user's email IDs with newly created domain and what will be best procedure.

          i dunno if im able to explain it or not but lemme try once more.


          we have a website registered with www.mycompany.co.uk which is up and running.
          our internal domain name is also mycompany.co.uk
          each user in the company has [email protected] email ID

          we are going to create a new ADS infrastructure (new domain which will be mycompany.local instead of mycompany.co.uk) our internet website will be the same which is www.mycompany.co.uk

          as i mentioned each user in our company has their email ID [email protected]. we just want every user to keep their email IDs in new domain (mycompany.local) the user's login names will be the same in new domain.

          how do we put forwarding in exchange so that each user in our new domain keep receiving their emails in new domain.

          I hope you might have a better idea now

          Comment


          • #6
            Re: want to keep existing email ids on exchange while domain is changing

            Look at these articles regarding renaming the domain, in case you still want to go with the rename option:

            http://technet.microsoft.com/en-us/w.../bb405948.aspx

            http://www.microsoft.com/downloads/d...displaylang=en

            http://www.microsoft.com/technet/tec.../DomainRename/

            http://technet2.microsoft.com/window....mspx?mfr=true

            http://www.msexchange.org/tutorials/Domain-Rename.html

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            • #7
              Re: want to keep existing email ids on exchange while domain is changing

              Thanks Simon for the assistance. I will have a look at them now.

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