Disable authentication for submission service

[Alexander Dalloz]

Am 28.07.2021 um 19:08 schrieb Dan Conway:
> Yes Dovecot will proxy the connection to the real MTA. My question is 
> why authentication is /always/ required on Dovecot when submission is 
> used, as MTAs usually have an option to allow non-authenticated relaying.

And relaying without authentication is a bad thing you should avoid.

Alexander