i am in a Laboratory network and i want to test Zimbra 7.1 on Ubuntu 10.4LTS 64-bit OS with address of one PC in the network is IP:, subnet: gateway: and DNS is, can you instruct me how to set the DNS (test.ac.in) and then install ZCS 7.1, i am a layman (fresher) with basic knowledge of linux, intially trying to set a mail server in linux, Your guidance and help will we appreciated