SpamAssassin not doing remote checks

I rebuilt chef a while ago, including a new version of SpamAssassin. The amount of spam I got immediately shot up to a level where less than 20% of spam was filtered. ok, I didn't train SA, and I'd like to implement per user training rules.

However, I did notice that spamd is not doing any remote checks. At all. zilch. The Wiki has the answer close to the bottom.

apt-get install libnet-dns-perl

For filtering by country see the country relay plugin.