Provided by: spamassassin_3.4.2-0ubuntu0.16.04.5_all bug

NAME
       DNSEVAL - look up URLs against DNS blocklists

       check_rbl_from_domain
           This checks all the from addrs domain names as an alternate to check_rbl_from_host.
           As of v3.4.1, it has been improved to include a subtest for a specific octet.