this will be my first installation of a cluster (high availability ). so
before i'm going to install a server i want to ask you if our purpose to
cluster smtp is possible and if anybody out there has any other
ideas/correction or even the experience with that issue.

which platform would be better - oes or sles?

what will be the steps for installing a cluster?
1) install 2 (or more) servers
2) ensure the network connection between the cluster and the others
3) install "heartbeat" or something like that
4) configure the clusterd service

is this the way to a cluster or is there something missing? if so, please
correct me.

thanks in advance!