What MTA configurations are actually needed
I just installed mailman on my server and set up everything working without using these options:
- lmtp_host: 127.0.0.1
- lmtp_port: 8024
- smtp_host: localhost
- smtp_port: 25
- configuration: python:mailman.config.postfix
I am running postfix on the same host as mailman. It could be made clear that specifying these are optional and not necessary.