From: Eagle L. C. S. <ser...@ea...> - 2008-03-11 17:36:15
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Sounds easy enough, I only use mail on 2 out of 3 domains, do I have to remove them all, or just the mail-enabled domains? I gues it doesn't really matter either way, I'm just curious. Thank you for the help, everyone was making it sound really hard if I had to do it all manually. Jeff Jamie Cameron wrote: > If you do want to switch mail servers and are using Virtualmin > to manage your mail, you can migrate as follows : > > 1) Backup all your domains with all features, including mail files > (if the checkbox for that is visible). > 2) Delete all your domains. > 3) Remove Sendmail, install Postfix, configure it, and tell Virtualmin > that it is now the mail server. Make sure a config check passes. > 4) Restore all your domains. > > - Jamie > > On 11/Mar/2008 07:42 Eagle Link Customer Service wrote .. > >> I'm running CentOS, so I shouldn't have that problem, as far as backing >> up and restoring after changing the MTA, Jamie, can you comment on >> that? Only other alternative I can think of would be to have the >> existing messages forwarded to a backup mx server which would them >> forward them back to the main server and be re-sorted to each user once >> I tell it the main server is back up. I do not have too many users >> right now, so I'm sure it wouldn't be impossible to do, though may take >> a few minutes. >> >> So the biggest question for Jamie, and possibly the easiest thing to do, >> would be; if I back up my domain in virtualmin, then change over to >> postfix (being sure to change any config in virtualmin to use postfix) >> would I be able to just restore the domain and have all the mail and >> user mapping there? >> >> Also one question not answered yet was, Will switching over affect the >> mail files already in each user's directory? I could be wrong, which is >> why I'm asking this, but i would think not because dovecot is a separate >> server daemon and reads the mail files perfectly fine. Any conflicting >> thoughts on this? >> >> Thanks, >> Jeff >> >> Kris Deugau wrote: >> >>> Eagle Link Customer Service wrote: >>> >>> >>>> One other question, I've heard that by installing postfix, it >>>> automatically removes sendmail. Is this true and would it affect >>>> anything important? >>>> >>>> >>> *If* you're running Debian, or a Debian derivative, and using the system >>> package manager to install any software, then yes, sendmail will be >>> removed before Postfix is installed. >>> >>> This means you're in for an indefinite downtime while you: >>> >>> -> Back up the config (not sure if Webmin/Virtualmin does a logical >>> backup (which could be restored to any OS/MTA combination) or a bare >>> config-file backup (must be restored to the same or very similar OS/MTA) >>> >>> -> Install Postfix/uninstall sendmail >>> >>> -> Import the backed-up configuration >>> >>> This last step is the one that may take some time; if Webmin/Virtualmin >>> doesn't provide a logical configuration backup that it can restore to >>> some other MTA, you're likely going to have to do a fair chunk of that >>> step manually. :( >>> >>> I would really not recommend switching MTAs like this except as a last >>> resort; it's bad enough to do if you're intimately familiar with one >>> MTA and have a fair understanding of the SMTP protocol (eg, good enough >>> to write simple tools that use it). Read further down my last message; >>> there's likely something simple you missed and it will be far simpler >>> for you to fix the existing setup than switch MTAs. >>> >>> -kgd >>> >>> ------------------------------------------------------------------------- >>> This SF.net email is sponsored by: Microsoft >>> Defy all challenges. Microsoft(R) Visual Studio 2008. >>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ >>> - >>> Forwarded by the Webmin mailing list at web...@li... >>> To remove yourself from this list, go to >>> http://lists.sourceforge.net/lists/listinfo/webadmin-list >>> >>> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by: Microsoft >> Defy all challenges. Microsoft(R) Visual Studio 2008. >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ >> - >> Forwarded by the Webmin mailing list at web...@li... >> To remove yourself from this list, go to >> http://lists.sourceforge.net/lists/listinfo/webadmin-list >> > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > - > Forwarded by the Webmin mailing list at web...@li... > To remove yourself from this list, go to > http://lists.sourceforge.net/lists/listinfo/webadmin-list > |