How to add spam filtering in Plesk

Here's a quick command in enabling spamassasin for all Plesk users.

# mysql -u admin -p`cat /etc/psa/.psa.shadow` psamysql> update mail set spamfilter = 'true' where postbox = 'true';

# /usr/local/psa/admin/bin/mchk --with-spam

This applies to Plesk 8.