Hi I have an existing setup, but no DNS server, everything is in host files. What I want to add is: 1. 2 DNS servers and 2. A mirror of my pop3 server for failover. Is it a case of running first mailserver from the perfect setup again and then choosing the mirror option? With DNS, I guess I cannot just tick the box in the server services and it will install it? Thanks Dave
Check mail chapters of the multiserver guide on how to set up a mirrored dovecot system. or alternatively, use a shared storage for /var/vmail if you do not want to use dovecot to sync the emails. No, what a server is capable of is defined at install time. Switching on DNS will just make this option available in the GUI. If you selected to use BIND at install time as a local resolver, it might work for the special case DNS. You should check which DNS server you currently run on these systems.