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This is the default, but disabling network rules (including DNS rules) causes SpamAssassin to be wrong on about 5 3 times more emails. Network tests may have been disabled by running spamassassin or spamd with the command line arguments -L or --local. DNS rules may have been disabled with "dns_available no" in local.cf. You should run a local caching DNS server for efficiency.
As of 2011-0312-2421, without network tests, SpamAssassin is wrong 52.35 58 times as often on non-spam, and 43.25 40 times as often on spam.
Install Pyzor and Razor
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