| Description: | The Spamhaus Data Query Service (DQS) plugin for SpamAssassin enhances
existing functions by checking HELO/EHLO, From, Reply-To, Envelope-From
and Return-Path against Spamhaus DBL/ZRD blacklists. It also scans the
e-mail body for e-mail addresses and performs blacklist lookups against
the domains or its authoritative nameservers. Further checks cover the
reverse DNS matches in DBL/ZRD blacklists or the SBL/CSS lookups for IP
addresses or IP addresses of authoritative nameservers of domains being
part of the e-mail body.
While the DQS usage is free under the same terms like when using public
mirrors (which are shipped in SpamAssassin as default configuration), a
registration procedure for a free DQS key is mandatory nevertheless. |
|---|