I'm a total linux newbie and was having a lot of trouble trying to get the install to work.
First thing was it kept telling me sendmail and postgresql was missing. Postresql was easily fixed (YaST install) but I did get a little confused when it came to sendmail. When I went to install this I was warned that Postfix was already installed. Eventually I just got it to uninstall Postfix and that was fine.
The other problem was that network check kept failing. The main part of the message was somewhat like what follows.
Network check failed - IP address '127.0.0.2' associated with host name 'linux1.xxx' in DNS does not match machines IP address.
For the life of me I had no idea how to fix this! /etc/hosts.conf etc - no idea!
I found that if I added an Alias for the network device it then all works (at least let me install Scalix, not sure if I can run it yet).
I'm guessing part of my problems are that I'm getting a DHCP from a Windows Small Business Server, which might also be serving DNS, which means that maybe the linux box is never registering itself properly with the DNS server or something (as I said I'm a total Linux newbie, and pretty much know squit about networks).
If anyone wants to give their two cents it would be interesting. I'll post more when I know if I've got it all set up properly.