I have a brand new shiney install of Zimbra 4.0 on Debian Sarge (thanks for the debian support!). The only problem I had is that there seems to be a missing dependency check for libexpat1. Anyway, when I install the system, it uses the hostname of the system I'm installing on, but I want accounts (and thus mail) to be set up directly under the root domainname, so the addresses are email@example.com, not firstname.lastname@example.org. How do I do this?
BTW, this host is running under Xen, which is possible after installing libc6-xen from testing to enable NPTL.