Planning for load balancing

[Jacco Rens]

Hello,

I'm currently running Apple's Mac OS X Server as mail server for about  
100 users. The current setup has problem keeping up with all those  
users, since cyrus is limited to 300 sessions. The mail client in use  
opens 4 sockets per account, so there are quite often time-outs or  
password errors during office time. Now I want to look into solving  
this issue, without investing in new hardware. I can run VMware, with  
2 or 3 more virtual Mac OS X Servers.

Would the cyrus murder function help me here?
Can anyone advice what could help?

Best,

	Jar.