I'm doing a Zimbra Open Source Edition installation which is going to be for around 30 users to start with but then up to ~200 in September if everything goes well! The box we have is a 1.5Ghz Pentium III, 512mb RAM, 40gb HDD with Ubuntu 6.06. It seems to be running fine but *if* I can get the funds, I am hoping to up the RAM to 2gb which sound make things a bit smoother. Would this be the best thing to do? Also, are there any tips for running it on such a low powered machine?
Secondly, I am trying to get my head around domains. We have our main domain (Purple Radio - Durham Student Radio) where the majority of emails will come through but we also have some older ones (like purple.dur.ac.uk and purple.dsu.org.uk). How do I set Zimbra to work with this but just to accept mail and deliver them to the same mailbox on purpleradio.co.uk? I've seen a reference to 'domain alias' - is this what I am after?
This project is for Purple Radio - the student radio station at the University of Durham. We are planning on having a centralised system so all members, DJs and alumni can stay in touch better. We have very little or no money so are making do with what we can. So far, everyone loves Zimbra and are excited by the possibilities.