Hi there, I am running my own server with the Raspberry Pi and would like to find someone to do a backup MX exchange.
What does "backup MX" means? It means you have a primary mail server (the one it receives mail for a given domain and delivers it to final recipients) and if for any reason it goes down, another mail server (the backup MX) will take care of mail sent to you by keeping it in mail queue for some time (instead of returning it) waiting for your primary to come back online to proceed to their delivery.
Does any Raspberry Pi user have a personal MTA and would like to do this backup MX exchange? BTW, I only have a single mail domain to backup, but no problem if someone has more