I need to change the master domain
 

I need change the name of domain from test1.com to test2.com.

Before i´d have two customers at this server, client1 and client2. When i install the server and ispconfig I put test1.com (from client1) like master domain and name server, but now this customer as gone (and client2 dont like www-data@test1.com messages for example), i need to change all configs to test2.com, but whithout reinstall or stop the server (it have various online shops).

How can i change this and modify the ispconfig without reinstall ?

Sorry for my bad bad english. :(

Which linux distribution do you use?

Debian Sarge with ispconfig 2.2.3

Change the hostname in /etc/hosts, /etc/hostname and /etc/postfix/main.cf. Restart your system afterwards.

Nothing to change in ispconfig?, this is my real question ;)

Please change the domain in ISPCOnfig under management > server > settings too.