[CentOS] clustered mail server?

Rudi Ahlers wrote:
> Well, that's one of the problems I foresee, but also the fact that each 
> email has a unique message ID, so I don't know if the backup server will 
> pickup the changed messages ID's or not? I have been thinking of running 
> a MySQL backed mail server, but have a feeling it will have a heavy 
> impact on performance

umm. message-ID's are added at mail origin time ( or the first time they 
come in contact with a non brain dead mta ).

me thinks you need to read up a bit on what email is and how it works. 
the RFC's are a good place to start ( and mostly readable ).

-- 
Karanbir Singh : http://www.karan.org/  : 2522219 at icq