I want to setup a spare server for disaster-recovery. (Zimbra OS Version on Debian)
So it should have the same hostname and MX record as the production server.
How can I fake the DNS settings like A record and MX record for the Zimbra binary installation at the moment of initial installation? (and for postifx after the installation procedure, if i let it run to test the spare server. therefore I would set the IP on my workstation through hosts file to point to the new server)
how to do this on a local LAN without internet-access?
and how on an internet-connected spare-server that has a different ip?
If I can do this, it is possible to easily switch the DNs settings in case of desaster from the production machine to the spare-server.
thanks in advance, robert