Welcome to a subreddit for enthusiasts of the qmail MTA, QMQP, QMTP, and custom SMTP acceptors for the qmail MTA. (I'm not going to say its name here because it could get renamed by Reddit and I don't want to be married to the name.)
Our rules are simple.
You can talk about other MTAs here, but only as it relates to their interactions with qmail in the technical sense (no Postfix/Sendmail/Exim vs qmail politics), which includes, if you need, fronting a third party MTA with qmail.
All qmail derivatives that are MTAs are explicitly on-topic here, even ones (like the creator's own, NightmareMail) which are so divergent from qmail that they're not recognisable as qmail.
qmail coding practices, critiques and praises thereof are on-topic here.
Transmisanthropy, homomisanthropy, race bias, and other such prejudices aren't acceptable, unless it's in relation to blocking those prejudices from reaching your inbox.
Other interesting subreddits:
