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Mail::SpamAssassin::Plugin::DCCUser)Contributed Perl DocumentMail::SpamAssassin::Plugin::DCC(3pm)
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 https://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 https://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 https://www.dcc-servers.net/dcc/#download See
also https://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
https://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 specified, "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.
perl v5.30.0 2023-03-24 Mail::SpamAssassin::Plugin::DCC(3pm)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
On Apache
Under GNU General Public License
2024-04-19 15:55 @18.191.234.62 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)