Provided by: spamassassin_3.3.2-2ubuntu1_all bug

NAME

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

SYNOPSIS

         loadplugin     Mail::SpamAssassin::Plugin::DCC

         full DCC_CHECK        eval:check_dcc()
         full DCC_CHECK_50_79  eval:check_dcc_reputation_range('50','79')

DESCRIPTION

       The DCC or Distributed Checksum Clearinghouse is a system of servers collecting and
       counting checksums of millions of mail messages.  TheSpamAssassin.pm 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.

TAGS

       The following tags are added to the set, available for use in reports, header fields,
       other plugins, etc.:

         _DCCB_    DCC server ID in a response
         _DCCR_    response from DCC - header field body in X-DCC-*-Metrics
         _DCCREP_  response from DCC - DCC reputation in percents (0..100)

       Tag _DCCREP_ provides a nonempty value only with commercial DCC systems.  This is the
       percentage of spam vs. ham sent from the first untrusted relay.

USER OPTIONS

       use_dcc (0|1)       (default: 1)
           Whether to use DCC, if it is available.

       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.

       dcc_rep_percent NUMBER
           Only commercial DCC systems provide DCC reputation information. This is the percentage
           of spam vs. ham sent from the first untrusted relay.  It will hit on new spam from
           spam sources.  Default is 90.

ADMINISTRATOR OPTIONS

       dcc_timeout n       (default: 8)
           How many seconds you wait for DCC to complete, before scanning continues without the
           DCC results.

       dcc_home STRING
           This option tells SpamAssassin where to find the dcc homedir.  If not given, it will
           try to get dcc to specify one, and if that fails it will try dcc's own default homedir
           of '/var/dcc'.  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" or specified explicitly, it will use that
           interface instead of "dccproc".

       dcc_dccifd_path STRING
           This option tells SpamAssassin where to find the dccifd socket. If "dcc_dccifd_path"
           is not specified, it will default to looking for a socket named "dccifd" in a
           directory "dcc_home".  The "dcc_dccifd_path" can be a Unix socket name (absolute
           path), or an INET socket specification in a form "[host]:port" or "host:port", where a
           host can be an IPv4 or IPv6 address or a host name, and port is a TCP port number. In
           case of an IPv6 address the brackets are required syntax. If a "dccifd" socket is
           found, the plugin 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".