Mail::SpamAssassin::PlUser:Contributed Perl Mail::SpamAssassin::Plugin::DCC(3)
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. The
counts can be used by SpamAssassin to detect and filter spam.
See http://www.dcc-servers.net/dcc/ for more information about DCC.
Note that DCC is disabled by default in "v310.pre" because its use
requires software that is not distributed with SpamAssassin and that
has license restrictions for certain commercial uses. See the DCC
license at http://www.dcc-servers.net/dcc/LICENSE for details.
Enable it by uncommenting the "loadplugin
Mail::SpamAssassin::Plugin::DCC" confdir/v310.pre or by adding this
line to your local.pre. It might also be necessary to install a DCC
package, port, rpm, or equivalent from your operating system
distributor or a tarball from the primary DCC source at
http://www.dcc-servers.net/dcc/#download See also
http://www.dcc-servers.net/dcc/INSTALL.html
TAGS
The following tags are added to the set, available for use in reports,
header fields, other plugins, etc.:
_DCCB_ DCC server ID in X-DCC-*-Metrics header field name
_DCCR_ X-DCC-*-Metrics header field body
_DCCREP_ DCC Reputation or percent bulk mail (0..100) from
commercial DCC software
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
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 hit. 999999 is DCC's MANY count.
The default is 999999 for all these options.
dcc_rep_percent NUMBER
Only the commercial DCC software provides DCC Reputations. A DCC
Reputation is the percentage of bulk mail received from the last
untrusted relay in the path taken by a mail message as measured by
all commercial DCC installations. See
http://www.rhyolite.com/dcc/reputations.html You "must" whitelist
your trusted relays or MX servers with MX or MXDCC lines in
/var/dcc/whiteclnt as described in the main DCC man page to avoid
seeing your own MX servers as sources of bulk mail. See
http://www.dcc-servers.net/dcc/dcc-tree/dcc.html#White-and-Blacklists
The 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. A numeric value is optionally
suffixed by a time unit (s, m, h, d, w, indicating seconds
(default), minutes, hours, days, weeks).
dcc_home STRING
This option tells SpamAssassin where to find the dcc homedir. If
not specified, try to use the locally configured directory from the
"cdcc homedir" command. Try /var/dcc if that command fails.
dcc_dccifd_path STRING
This option tells SpamAssassin where to find the dccifd socket
instead of a local Unix socket named "dccifd" in the "dcc_home"
directory. If a socket is specified or found, use it instead of
"dccproc".
If specifed, "dcc_dccifd_path" is the absolute path of local Unix
socket or an INET socket specified as "[Host]:Port" or "Host:Port".
Host can be an IPv4 or IPv6 address or a host name Port is a TCP
port number. The brackets are required for an IPv6 address.
The default is "undef".
dcc_path STRING
Where to find the "dccproc" client program instead of relying on
SpamAssassin to find it in the current PATH or "dcc_home/bin". This
must often be set, because the current PATH is cleared by taint
mode in the Perl interpreter,
If a "dccifd" socket is found in "dcc_home" or specified explicitly
with "dcc_dccifd_path", use the dccifd(8) interface instead of
"dccproc".
The default is "undef".
dcc_options options
Specify additional options to the dccproc(8) command. 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 daemon with the
ASCII protocol described on the dccifd(8) man page. Only
characters in the range [0-9A-Za-z ,._/-] are allowed for security
reasons.
The default is "undef".
dcc_learn_score n (default: undef)
Report messages with total scores this much larger than the
SpamAssassin spam threshold to DCC as spam.
POD ERRORS
Hey! The above document had some coding errors, which are explained
below:
Around line 190:
=over without closing =back
perl v5.16.3 2014-02-07Mail::SpamAssassin::Plugin::DCC(3)