Is the first time that we stress test zimbra's webmail application and we seeing a very strange behaviour, in a VM (on vmware) CentOS 5.3 64-bit with 1 GB and 4 CPUs, the test is 20 users sending and reading their inbox. After 5 minutes the VM did not respond and we have to restart.
I think we have missonfigured something, but my question is: Is there any rule of thumb that can guide us to size how many users per CPU Webmail can handle? (of course, given the CPU speed).
Is there any difference at the server level between standar and rich interface?