> It depends entirely on how it is used in the rest of the config.
> Which you didn't tell us.
so far my intentions for my mail server are pretty simple; It should receive **any** mails to users@??? and deliver them to the PAM users connected remotely through email clients with dovecot and the mail server should send mails from users@??? which are given to it by dovecot; received from remote email clients. I use tls authentication with certificates signed by letsencrypt.
