Email server Clustering/Redundancy

[jfer]

Hi Everyone,

Our mail server died for several hours due to a hardware failure, we dont have any extra parts laying around so we have to order it sameday.

We did not loose any emails because we have a MX backup collecting incoming email. The problem is: user can't send and receive emails until we resolve the issue.

I would say it would be one of the Best Howto to include in Howtoforge.
MX backup is good for short term downtime but not for long term ones.

A howto on linux HA (heartbeat), FreeBSD (VRRP), OpenBSD (CARP) would be
greatly appreciated.

Thanks

[Tortanick]

I second this motion, I've got two computers and luckaly two houses in vastly diffrent area's, a guide on how to use them both as mail servers efectively would be briliant!

[noahlau]

just an idea, i didnt try it before.

maybe Heartbeat for failover, DRBD for mirror user mailbox and user account between 2 server.

actually, Falko wrote a great guide, u may want to have a look:
http://www.howtoforge.com/high_avail...drbd_heartbeat

[Tortanick]

I'll have to look up NFS server, the idea of putting all the E-mail data and profiles on one and getting them to mirror eachother sounds delightfull!

[jfer]

come on everyone, start working on it.

[falko]

Originally Posted by jfer

come on everyone, start working on it.

What about noahlau's proposal?

[noahlau]

Originally Posted by falko

What about noahlau's proposal?

gonna try it in weekend.

[noahlau]

Should i mirror the mail queue directory ?

any advices ?

[falko]

What exactly are you trying to do?

[noahlau]

Originally Posted by falko

What exactly are you trying to do?

i mean when the server1 go down, the emails contained in server1 's mail queue will be lost if we only mirror the user mail box.