Well I've been trying to set up Mercury on our server, but I think I'm doing it all wrong.
I start mercury, we can see the little logo in the status bar, and we set up phpbb2 to SMTP server.
host: localhost
user: admin
pass:
When we register a new user, it says it mailed it all nice and fine, but we never get an email.
We enabled non local sending in mercury and thats how we got the above.