The best plugin for managing your MOTD.
MOTiVate is a plugin created for managing your MOTDs properly.
Should work for all versions that i listed, will backport it to older versions once i have time to. (Probably tomorrow... which is today because it's 00:05)
Look at the template created when launching the plugin for how to configure.
Here's how it works:
Don't touch this file, unless you want to clear player data. All it does is store players' UUIDs based on their hostnames, so that their data can be retrieved when fetching the MOTD.
I am looking to encrypt this later on in some way to prevent hostnames (That are basically the players' IPs) from being stored in plaintext