Turn off Mailscanner ordb.org check with SpamAssassin?

[Paul Welsh]

I have today installed SpamAssassin.  I also installed Net::DNS (from
CPAN) as per the recommendaton at
http://spamassassin.taint.org/dist/README.  This, apparently, helps
checking the open relay databases, eg, ordb.org.

SpamAssassin checks against relays.ordb.org so it seems a waste of
resources leaving on the default option to check against ordb.org in
mailscanner.conf.  Does anyone think it's necessary to keep
Mailscanner's ordb.org check if SpamAssassin is used?