I'm in the process of downloading Zimbra to try out. It's really kind
of a toss up for me. It's either Zimbra or Groupwise. The thing I like
about Zimbra over groupwise is it can be installed on multiple platforms
(ie Ubuntu). The other thing is the Outlook connector. Of course my
overall goal is to get everybody off desktop clients and into web based
e-mail. Hopefully relieve a few headaches.

Just a few thoughts whilst I'm waiting for zimbra to download.