Courier-mta + spamassassin + maildrop + dot-forward
Since the documentation sucks: it is possible to combine the pipes for spamassassin & maildrop with the funky double-pipe for dot-forward in the courierd conf file. Here’s what I have now:
DEFAULTDELIVERY="|| /usr/bin/dotforward
| /usr/bin/spamassassin | /usr/bin/maildrop"
Yes, on two separate lines. I don’t understand either. I wish the “DEFAULTDELIVERY” option was better-documented, I can’t seem to find anything besides “examples.”