heres my testimonial:

'Zimbra Collaboration Suite was so easy-to-install, me, a 14-year-old K-12 student managed to install and configure it within 30 minutes, with no problems. Administration couldn't be easier, and the familiar webmail user interface means your relative who doesn't know what cookies are, can use it.'

heh. well i would be lieing if i said no problems. my /etc/hosts file looked like this:

127.0.0.1 localhost.localdomain localhost
127.0.0.1 mail.mydomain.com mail

i then changed the ip address of the mail.mydomain.com entry to the eth0 interface's ip address and everything worked fine.

good stuff zimbra team