Which Alt-N products do you use?

MDaemon
Outlook Connector
SecurityPlus

Most recent posts: Mario Nebbia

Clatification about SMTP authentication - 10:50am May 23, 2019 CDT - While configuring an MDaemon Server and SMTP authentication I have the option to say "Authentication is always required when mail is from local accounts" and "...unless message is to a local account".
What is exactly a "local account"? How can MDaemon detect if an account is local or not?..