I figured I'd try and fix this on my setup, as I keep getting:
Jul 16 18:12:02 mailfilter pmg-smtp-filter[112488]: WARNING: check: dns_block_rule RCVD_IN_VALIDITY_RPBL_BLOCKED hit, creating /root/.spamassassin/dnsblock_bl.score.senderscore.com (This means DNSBL blocked you due to too many...