We are implementing our first Virtualmin Pro server. We're upgrading from another hosting platform and we're trying to build a little more resilience into our installation.
We are at a point where we are renting a VPS from another provider in another data center to provide certain services in case our primary server goes down. We're not trying for a perfect-world scenario, just easy and functional. These are our immediate goals:
Slaved Name Server Backup MX Replicated LDAP Backup RADIUS (uses replicated LDAP)
We may want to somehow backup/replicate our MySQL-based billing system (WHMCS) too, but I don't know how I would go about that yet.
Can you advise me on how I might go about this?
For example, should I just start with a clean Centos 5 install and construct everything manually? Should I put up another Virtualmin server? Pro or OSE?
How should I deal with spam filtering? If I don't implement spam filtering in the backup MX, it will all just flow into user's mailboxes when the servers reconnect, or would it? If I do implement the filtering, I may need a beefier VPS...
Anyway, thanks in advance,