SpamAssassin Rule: RCVD_IN_SORBS_ZOMBIE
Standard description: SORBS: sender is on a hijacked network
This check tests the IP address of the last untrusted relay against the DNSBL maintained by SORBS.
This is a list of networks hijacked from their original owners, some of which have already used for spamming.
The default scores for this rule can be found in the online list of tests.