designing a backup mail server

Shaun Feeley shaun.feeley at
Fri Jun 24 02:09:07 EDT 2005

Hi Guys,
I'm not sure if I'm at the right place so sorry if this is annoying

I run a cyrus mail server here at Cytopia supporting about 35 users.  I
have recently purchased some new boxes to upgrade the servers.  I am
upgrading the Cyrus server, but I am also keen to run a mirror backup
cyrus server.  Now my question is, can anyone give me any pointers on
how to go about designing a backup mail server.

I have configured one box as I want, then mirrored in onto another.  But
I am confused about the DNS setup .. should I create an alias ie mail
that can point to either??  

And secondly I am keen to somehow have the mail server polled and if it
stops responding bring the backup server into play.  To keep them
syncronised I am planning to use rsync... but then how do I keep the
sasl backend in sync, with different realms etc?

Anyway as you might have gathered I am by no means on top of the problem
so any ideas will be greatly appreciated.  

Thanks Shaun

Shaun Feeley
Systems Administrator

A.C.N. 082 492 680
Level 5, Baker Heart Research Institute Building
Commercial Road
Melbourne Victoria 3004 Australia
Tel: +61 3 9522 6900
Fax: +61 3 9510 9292
Email: cytopia at

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