I am using OpenSMTPD with Sympa trying to establish a multi-virtual-host mailing list server on a Debian 9 remote host.
I am having a bit of trouble mapping my limited experience of a Postfix+Mailman list server about eight years ago to the equivalent now using OpenSMTPD+Sympa, so I may be asking apparently stupid questions. I look forward to an easier configuration experience with OpenSMTPD. Best regards, -Tom Niceville, Florida USA