> Two questions. Wouldn't the log show the milter instead of spamd?
spamass-milter is merely a protocol adapter. The real work
is done elsewhere. http://linux.die.net/man/1/spamass-milter
> And now that this is working, how do I reject incoming messages
> based on their score (for example, say I wanted to reject all spam
> scoring 9.0 or higher)?
These are the options for the Postfix milter interface. I don't
know which ones spamass-milter can use.
1) A reject response from spamass-milter.
2) An "insert header" action from spamass-milter with something
that indicates the spamminess. This can trigger a reject action
with milter_header_checks.
Wietse