Dnia 18.05.2021 o godz. 15:28:28 post...@ptld.com pisze: > >what would send the mail out to the Internet after being accepted > >by Dovecot > >submission service? Dovecot is not a MTA, it's submission service > >needs to > >pass mail to a real MTA to be sent out further. > > Not anymore. Dovecot added submission service in version 2.3.0 and > can now send mail out to the internet all by it self without the > need of another MTA. [...] > https://doc.dovecot.org/admin_manual/submission_server/
Before writing my previous mail, I read exactly the same documentation as you linked above and for me it says something exactly opposite: Dovecot submission service needs real MTA as a "backend" to relay mail onto the Internet. By itself it can only send mail to that preconfigured backend MTA. It may be on a different server, but it needs to be available: "The Dovecot SMTP submission service directly proxies the mail transaction to the SMTP relay configured with the following settings:" -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub."