On 3/21/19 11:29 AM, Grant Taylor via Mailman-Users wrote:
I see no technical reason why Mailman couldn't function via something like fetchmail from a POP3 mailbox and SMTP Authentication to send.
Fetchmail would pull the messages from an external 3rd party email server, do a little processing on them to determine the command and list name before pipeing them into Mailman with said command and list name. Mailman would do it's thing, and then send the emails out using SMTP Authentication with the external 3rd party email server.
It would be quite atypical. But I think it should work.
It's not as atypical as you think. See, e.g., <https://www.mail-archive.com/search?q=fetchmail&l=mailman-users%40python.org>.
Also, since Mailman 2.1.23, batteries are included for sending to a remote MTA with SMTP Authentication.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan