NAME

Mail::SpamAssassin::Plugin::DCC - perform DCC check of messages

SYNOPSIS

  loadplugin     Mail::SpamAssassin::Plugin::DCC

DESCRIPTION

The DCC or Distributed Checksum Clearinghouse is a system of servers collecting and counting checksums of millions of mail messages. The counts can be used by SpamAssassin to detect and reject or filter spam.

Because simplistic checksums of spam can be easily defeated, the main DCC checksums are fuzzy and ignore aspects of messages. The fuzzy checksums are changed as spam evolves.

Note that DCC is disabled by default in init.pre because it is not open source. See the DCC license for more details.

See http://www.rhyolite.com/anti-spam/dcc/ for more information about DCC.

USER OPTIONS

use_dcc (0|1) (default: 1): Whether to use DCC, if it is available.
dcc_timeout n (default: 8): How many seconds you wait for DCC to complete, before scanning continues without the DCC results.
dcc_body_max NUMBER
dcc_fuz1_max NUMBER
dcc_fuz2_max NUMBER: This option sets how often a message's body/fuz1/fuz2 checksum must have been reported to the DCC server before SpamAssassin will consider the DCC check as matched.; As nearly all DCC clients are auto-reporting these checksums, you should set this to a relatively high value, e.g. 999999 (this is DCC's MANY count).; The default is 999999 for all these options.

ADMINISTRATOR OPTIONS

dcc_home STRING: This option tells SpamAssassin specifically where to find the dcc homedir. If dcc_path is not specified, it will default to looking in dcc_home/bin for dcc client instead of relying on SpamAssassin to find it in the current PATH. If it isn't found there, it will look in the current PATH. If a dccifd socket is found in dcc_home, it will use that interface that instead of dccproc.
dcc_dccifd_path STRING: This option tells SpamAssassin specifically where to find the dccifd socket. If dcc_dccifd_path is not specified, it will default to looking in dcc_home If a dccifd socket is found, it will use it instead of dccproc.
dcc_path STRING: This option tells SpamAssassin specifically where to find the dccproc client instead of relying on SpamAssassin to find it in the current PATH. Note that if taint mode is enabled in the Perl interpreter, you should use this, as the current PATH will have been cleared.
dcc_options options: Specify additional options to the dccproc(8) command. Please note that only characters in the range [0-9A-Za-z ,._/-] are allowed for security reasons.; The default is undef.
dccifd_options options: Specify additional options to send to the dccifd(8) daemon. Please note that only characters in the range [0-9A-Za-z ,._/-] are allowed for security reasons.; The default is undef.