I am not a mail server admin, however I've been given the task to migrate our company's current qmail server (running on Ubuntu 8.0) to a new Redhat Enterprise Linux server (RHEL 6.2).
After doing some research it seems that qmail is no longer being supported so I was thinking about installing Zimbra on the new server and then migrating the qmail users/mail boxes over to the zimbra server.
The current qmail server has 500 user accounts does not have any virtual domains nor aliases created.
We use courier-imap for user access with maildir as the mailbox format, and the mail accounts are created through an LDAP server.
My question is: What would be the best approach of getting all of the qmail server stuff over to the new zimbra server?.
Do I just need to copy everything and then change the MX record to point to the new server after everything has copied successfully?
Best Answer
Hire someone to do this for you.
Really, I'm serious.
Mail systems are notoriously complex and fragile beasts. You admit that you are not a "mail server admin". It would be one thing if you were migrating to a similar system, but in this case, you're migrating to a completely different environment with a lot of moving parts. You really, really, don't want to do this yourself.
I know this probably isn't the answer you're looking for, but it is the best answer for your situation.