Results 1 to 10 of 10

Thread: Migration Test

  1. #1
    Join Date
    Mar 2006
    Location
    Massachusetts
    Posts
    965
    Rep Power
    10

    Default Migration Test

    I am a Systems / Email Administrator for a relatively small user base (300-400 users). We currently have a pretty basic setup for email. We have a Linux server running Postfix, and all the users have regular UNIX accounts on the server. All our clients use Outlook, but we are only doing POP3 email. We do not have any shared calendars, or group address lists. I have been pushing the company to move towards a more server-centric solution that will give us some of these "Exchange-like" features, but I definitely want it to be Linux-based software. I think Zimbra may be a good fit for our needs.

    I'm planning on installing the Open Source Edition on a new server. Initially I would like to test just the email portion of Zimbra with one user. Ideally it would be user in our current email domain, and email would still come into our existing email server, but then forwarded over to the Zimbra server. The next stage would be to move a small group (5-10 users) over to the Zimbra server to test and/or demonstrate some of the other features, like the calendaring and group address lists. Finally, assuming I get a green light to proceed, I would probably want to move the users over in stages, although I would also consider doing it in one fell swoop.

    I'm looking for ideas on the best way to proceed with this type of test and possible migration. Any thoughts or ideas would be greatly appreciated.

    John

  2. #2
    Join Date
    Aug 2005
    Location
    San Mateo, CA
    Posts
    4,789
    Rep Power
    19

    Default

    Welcome. Assuming you can simply forward mail for the test accounts and you have IMAP access to the current mail you can use imapsync to get a copy. If they POP/delete then there is no mail to migrate and you can just set up a rule/filter to forward a copy of mail to Zimbra. In fact we've had lots of trial where customers used imapsync to bring in all the accounts, then set up a forward for several accounts and allowed people to explore the Zimbra UI with some of their mail. Then when your ready to switch just make sure all the users' change their POP server's to look at Zimbra and you can then move the Mx record to the new server. You might want to read a little about split domain. This talks about a few techniques for running Zimbra in parallel with your current mail system.

    http://wiki.zimbra.com/index.php?title=Split_Domain
    Looking for new beta users -> Co-Founder of Acompli. Previously worked at Zimbra (and Yahoo! & VMware) since 2005.

  3. #3
    Join Date
    Mar 2006
    Location
    Massachusetts
    Posts
    965
    Rep Power
    10

    Default

    Thanks for the reply. I did briefly look at the Split Domain document, but figured I was getting a little ahead of myself for the one user test, and probably even for the 5-10 user test. We currently do POP/delete so there is no mail to migrate from the server. But I was probably going to investigate the tool to migrate Outlook pst files. Anyway, at least initially I'm more interested in getting a feel for the Zimbra interface and how it works in our real-life environment.

    I guess the one initial question/concern I have is related to forwarding email from my current email server over to the Zimbra server. I know with the Postfix alias table I can forward email from one account to another; I've done this on several occassions. But in this case I'm not really sending it to a different account. I just want the email to end up on another server. I don't really have any experience with doing this. I was hoping someone on the forum may have done something similar to what I am looking to do.

  4. #4
    Join Date
    Aug 2005
    Location
    San Mateo, CA
    Posts
    4,789
    Rep Power
    19

    Default

    If you set up zimbra with a test domain then you can just forward the mail via smtp. If you don't want to take that route your back in split domain land. IMHO split domain is better if you want to use this first install as your eventual production server. If you plan to reinstall at some point then a test domain is better.
    Looking for new beta users -> Co-Founder of Acompli. Previously worked at Zimbra (and Yahoo! & VMware) since 2005.

  5. #5
    Join Date
    Mar 2006
    Location
    Massachusetts
    Posts
    965
    Rep Power
    10

    Default

    Thanks again. I think I'm going to have to do a reinstall anyway, so I'll probably start with the test domain, at least for my one user test.

    One additional question. I just walked through the install and it setup the domain as "servername.mydomain.com". What do I need to change so that the domain is simply "mydomain.com"?

  6. #6
    Join Date
    Aug 2005
    Location
    San Mateo, CA
    Posts
    4,789
    Rep Power
    19

    Default

    You should be able to create a new domain in the admin UI. Also create a new admin user. then remove the old domain. It might just be easier to re-install as it only takes a minute or two.
    Looking for new beta users -> Co-Founder of Acompli. Previously worked at Zimbra (and Yahoo! & VMware) since 2005.

  7. #7
    Join Date
    Mar 2006
    Location
    Massachusetts
    Posts
    965
    Rep Power
    10

    Default

    Maybe I'm just missing something obvious, but I don't see where the installation let me specify a domain. Is it based off of the admin account that I choose to create?

  8. #8
    Join Date
    Aug 2005
    Location
    San Mateo, CA
    Posts
    4,789
    Rep Power
    19

    Default

    Yes I think the current installer will create the domain based on the admin user.
    Looking for new beta users -> Co-Founder of Acompli. Previously worked at Zimbra (and Yahoo! & VMware) since 2005.

  9. #9
    Join Date
    Mar 2006
    Location
    Massachusetts
    Posts
    965
    Rep Power
    10

    Default

    Changing the default admin account to admin@"mydomain.com" did not do the trick. The installation program is still trying to create the default domain as "servername.mydomain.com". I did a search on the forums and it appears that at some point the installation program prompted for the default domain, but that does not appear to be the case with the release I am trying (3.0.1 GA 160 for RHEL4).

    Also, I read more closely the Split Domain document and now I think that is the route I will take even for my one user test. However, the one question I have with this method is, if and when I migrate all my users over to the Zimbra server what configuration changes would I have to make so that this is the one and only email server in my domain?

  10. #10
    Join Date
    Aug 2005
    Location
    San Mateo, CA
    Posts
    4,789
    Rep Power
    19

    Default

    It should be in the LDAP menu.
    Looking for new beta users -> Co-Founder of Acompli. Previously worked at Zimbra (and Yahoo! & VMware) since 2005.

Similar Threads

  1. Migration Wizard: Unable to Open Directory Object
    By ThorGoLucky in forum Administrators
    Replies: 15
    Last Post: 01-31-2008, 02:01 AM
  2. Using Zimbra LDAP for System Auth
    By webguyinternet in forum Administrators
    Replies: 7
    Last Post: 10-22-2007, 04:35 PM
  3. mail migration usermail size
    By kmuralidharan in forum Migration
    Replies: 0
    Last Post: 07-10-2007, 09:16 AM
  4. My migration from GroupWise - any suggestions?
    By stuartg.orion in forum Migration
    Replies: 3
    Last Post: 06-11-2007, 06:34 PM
  5. 5.0 Beta Test Server Install - Sanity Check
    By soxfan in forum Installation
    Replies: 3
    Last Post: 06-07-2007, 11:53 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •