SPAMC(1) User Contributed Perl Documentation SPAMC(1)
spamc - client for spamd
spamc [options] < message
Spamc is the client half of the spamc/spamd pair. It should be used in
place of "spamassassin" in scripts to process mail. It will read the
mail from STDIN, and spool it to its connection to spamd, then read the
result back and print it to STDOUT. Spamc has extremely low overhead
in loading, so it should be much faster to load than the whole spamas-
See the README file in the spamd directory of the SpamAssassin distri-
bution for more details.
-B Assume input is a single BSMTP-formatted message. In other words,
spamc will pull out everything between the DATA line and the lone-
dot line to feed to spamd, and will place the spamd output back in
the same envelope (thus, any SIZE extension in your BSMTP file will
cause many problems).
-c Just check if the message is spam or not. Set process exitcode to
1 if message is spam, 0 if not spam or processing failure occurs.
Will print score/threshold to stdout (as ints) or 0/0 if there was
an error. Combining -c and -E is a no-op, since -c implies the
behaviour of -E.
In TCP/IP mode, connect to spamd server on given host (default:
If host resolves to multiple addresses, then spamc will fail-over
to the other addresses, if the first one cannot be connected to.
-e command [args]
Instead of writing to stdout, pipe the output to command’s standard
input. Note that there is a very slight chance mail will be lost
here, because if the fork-and-exec fails there’s no place to put
the mail message.
Note that this must be the LAST command line option, as everything
after the -e is taken as arguments to the command (it’s like rxvt
This option is not supported on Win32 platforms.
-E Filter according to the other options, but set the process exitcode
to 1 if message is spam, 0 if not spam or processing failure
-h Print this help message and terminate without action.
-H For TCP/IP sockets, randomize the IP addresses returned from a DNS
name lookup (when more than one IP is returned). This provides for
a kind of hostname-base load balancing.
-l Send log messages to stderr, instead of to the syslog.
In TCP/IP mode, connect to spamd server listening on given port
-r Just output the SpamAssassin report text to stdout, if the message
is spam. If the message is ham (non-spam), nothing will be
printed. The first line of the output is the message score and the
threshold, in this format:
-R Just output the SpamAssassin report text to stdout, for all mes-
sages. See -r for details of the output format used.
Set the maximum message size which will be sent to spamd -- any
bigger than this threshold and the message will be returned unpro-
cessed (default: 250k). If spamc gets handed a message bigger than
this, it won’t be passed to spamd.
The size is specified in bytes, and if you send it a negative num-
ber, things are quite likely to break very hard.
-S If spamc was built with support for SSL, encrypt data to and from
the spamd process with SSL; spamd must support SSL as well.
Set the timeout for spamc-to-spamd communications (default: 600, 0
disables). If spamd takes longer than this many seconds to reply
to a message, spamc will abort the connection and treat this as a
failure to connect; in other words the message will be returned
This argument has been semi-obsoleted. To have spamd use per-user-
config files, run spamc as the user whose config files spamd should
load. If you’re running spamc as some other user, though, (eg.
root, mail, nobody, cyrus, etc.) then you can still use this flag.
Connect to "spamd" via UNIX domain socket socketpath instead of a
This option is not supported on Win32 platforms.
-V Report the version of this "spamc" client. If built with SSL sup-
port, an additional line will be included noting this, like so:
SpamAssassin Client version 3.0.0-rc4
compiled with SSL support (OpenSSL 0.9.7d 17 Mar 2004)
-x Disables the ’safe fallback’ error-recovery method, which passes
through the unaltered message if an error occurs. Instead, exit
with an error code, and let the MTA queue up the mails for a retry
later. See also "EXIT CODES".
-y Just output the names of the tests hit to stdout, on one line, sep-
arated by commas.
By default, spamc will use the ’safe fallback’ error recovery method.
That means, it will always exit with an exit code if 0, even if an
error was encountered. If any error occurrs, it will simply pass
through the unaltered message.
The -c and -E options modify this; instead, spamc will use an exit code
of 1 if the message is determined to be spam.
If the "-x" option is specified, ’safe fallback’ will be disabled, and
certain error conditions related to communication between spamc and
spamd will result in an error code. The exit codes used are as
EX_USAGE 64 command line usage error
EX_DATAERR 65 data format error
EX_NOINPUT 66 cannot open input
EX_NOUSER 67 addressee unknown
EX_NOHOST 68 host name unknown
EX_UNAVAILABLE 69 service unavailable
EX_SOFTWARE 70 internal software error
EX_OSERR 71 system error (e.g., can’t fork)
EX_OSFILE 72 critical OS file missing
EX_CANTCREAT 73 can’t create (user) output file
EX_IOERR 74 input/output error
EX_TEMPFAIL 75 temp failure; user is invited to retry
EX_PROTOCOL 76 remote error in protocol
EX_NOPERM 77 permission denied
EX_CONFIG 78 configuration error
spamd(1) spamassassin(1) Mail::SpamAssassin(3)
The SpamAssassin(tm) Project <http://spamassassin.apache.org/>
SpamAssassin is distributed under the Apache License, Version 2.0, as
described in the file "LICENSE" included with the distribution.
perl v5.8.6 2005-11-08 SPAMC(1)
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