http://kb.parallels.com/en/944

# /usr/local/psa/admin/sbin/mchk --helpSynopsis:mchk [OPTION]--without-spam - restore all settings except for SpamAssassin configuration--with-spam - restore all settings--spam-only - restore only SpamAssassin settings

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