This option is disabled by default. You can let Gnus consult the blackhole-type distributed spam processing systems (DCC, for instance) when you set this option. The variable
spam-blackhole-serversholds the list of blackhole servers Gnus will consult. The current list is fairly comprehensive, but make sure to let us know if it contains outdated servers.
The blackhole check uses the
dig.elpackage, but you can tell
dns.elinstead for better performance if you set
nil. It is not recommended at this time to set
nildespite the possible performance improvements, because some users may be unable to use it, but you can try it and see if it works for you.
A regular expression for IPs that should not be checked against the blackhole server list. When set to
nil, it has no effect.
dig.elpackage instead of the
dns.elpackage. The default setting of
Blackhole checks are done only on incoming mail. There is no spam or ham processor for blackholes.