[CentOS] Load balancing email?

Ajay Sharma ssharma at revsharecorp.com
Wed Oct 26 21:44:19 UTC 2005

Jay Leafey wrote:
> I'm using a similar setup at work, two identical Linux boxes (with a 
> pair of equal-priority MX records pointing to them) running 
> Postfix/Amavisd/SpanAssassin/anti-virus feeding to another box acting as 
> the POP/IMAP server.  The DNS round-robin stuff does a fair job of load 
> balancing but it's not perfect, I'm still looking into alternatives for 
> that.
> In order to make the two servers redundant I'm using the LinuxHA 
> heartbeat stuff to make one of the servers take over the IP address used 
> by the other server for mail.  So far it's survived several 
> single-server failures without a hiccup.

How do you keep the storage synced up?  NFS, drdb, GFS, ...?


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