Hi, I just downloaded Zimbra - it looks like it's just what I've been dreaming of - and the install process worked fine, just like a standard Mac OS X software install. I even spotted the bit about /opt/zimbra/libexec/zmsetup.pl and when it failed in Terminal I managed to work out how to set up a root userid and password, then repeated /opt/zimbra/libexec/zmsetup.pl and saved the file, which had a .5nnn extension.
You will have gathered I know nothing about this stuff, so what do I do now? I was looking for a nice little Zimbra icon or something - yes, I'm naive! Used to be a Systems Programmer on IBM a million years ago but whilst Macs are fantastic I don't know much Mac/Unix/Linux stuff. Thanks in anticipation, Rob