Mail Store Disaster Recovery.

Greetings,

I have a question concerning the setup of mail systems with some DR. I have two Mail servers, they are using different configuration directories, but the same user/group directories.

What I'd like to do is keep the mail stores "rsynced" between the two servers. so all of a users's email is on both machines.

Essentially I want this, so if I need to take a machine down or it dies, I can simply change the "mailhost" entry in the directory to do a sort of "failover" to the other machine.

However, I'm not completely sure of the feasibility of this.

Has anyone had any experience with this?

Is this the preferred method of providing fault tolerance?

I'm wondering if there would be any issue with the mailbox hash's. Other than the mailboxes themselves, what else should I sync? Everything found in the mdbstore directory, all of the .db's?

Any help is much appreciated.!!

[946 byte] By [jeremycrussell] at [2007-11-26 9:56:14]
# 1

Rsync should work fine, but. . .

1. Your load on the link may be more than your bandwidth.

2. Your disk i/o is usually the limiting factor for server performance. Rsync will lower this a whole lot.

3. You should also sync the mboxlist database, and that's another large amount of bandwidth, unless you're willing to reconstruct before failover.

I'm not sure what you're looking for in the "mailbox hash's". The directory structure is calculated, based on the UID, and always will be the same.

jay_plesset at 2007-7-7 1:18:17 > top of Java-index,E-Mail, Calendar, & Collaboration,Sun Java System Messaging Server...