We have two sites each with an MTA and MX record. We think about introducing CipherMail into our infrastructure.
Obviously, there is a way using MariaSQL/MySQL and Galera Cluster, HAproxy, ... to create a "real" cluster. With at least three nodes and a lot of overhead, this seems to be a little too much for our use case. I thought of a solution with PostgreSQL, backup, transfer backup to the other site, restore there, automated as a cron job. Configuration would only be possible on the "master" site, but that's okay. The database on the "slave" site would be overwritten regularly. In your opinion, what do you think would be a simple solution for my use case? Would my idea even work?
