DKIM is an email authentication method that allows the receiver to check that an email claiming to have come from a specific domain was indeed authorized by the owner of that domain. This is achieved by adding a digital signature to the headers of the email.
If you're interested in creating your own MTA SA scripts, I recommend checking out the official MTA documentation and scripting resources. Do you have a specific question about MTA SA scripting or a project you'd like to work on? I'm here to help!
: Runs on the server host. It handles persistent data like player accounts, vehicle spawning, and security.
: Scripts are then deployed on the server. This usually involves placing the script files in the appropriate directory and configuring the server to load the script.