Groupwise on other linux distro's?

Hi,

we are running GroupWise on OES and are very happy with it.

We have a standby server to be activated when the main server goes down.

I would like to put CENTOSon the backup server, because we have a critical application that runs best on CENTOS ( and unfortuantely not on SLES ), but I guess Groupwise cannot be run on CENTOS?

Has anyone experience with Groupwise on other Linux distros?

Thanks and regards,

b.