Man page - filter-senderscore(8)

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Package: opensmtpd-filter-senderscore
apt-get install opensmtpd-filter-senderscore

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filter-senderscore(8)

Manual

FILTER-SENDERSCORE (8) System Manager’s Manual FILTER-SENDERSCORE (8)

NAME

filter-senderscore — SenderScore filter for OpenSMTPD

SYNOPSIS

filter-senderscore [ -blockBelow score ] [ -blockPhase phase ] [ -junkBelow score ] [ -slowFactor factor ] [ -scoreHeader ]

DESCRIPTION

The filter-senderscore filter for the OpenSMTPD ( smtpd (8)) server filters sessions based on their SenderScores reputation score. Its options are:

-blockBelow score

Displays an error banner for sessions with a reputation score below score and then disconnects.

-blockPhase phase

Determines at which phase -blockBelow is triggered. The default is connect . Valid choices are connect , helo , ehlo , starttls , auth , mail-from , rcpt-to , and quit . Note that quit will result in a message at the end of a session and may only be used to warn the sender that its reputation is degrading, as it will not prevent transactions from succeeding.

-junkBelow score

Prepends a ‘X-Spam: yes’ header to messages for sessions with a reputation score below score .

-slowFactor factor

Delays all answers by this many milliseconds, where ‘score’ is the reputation score:

factor − ((factor ÷ 100) ∗ score)

-scoreHeader

Adds an ‘X-SenderScore’ header with the sender’s reputation score if known.

EXIT STATUS

The filter-senderscore utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

Adding the following to smtpd.conf enables filter-senderscore for all incoming connections.

filter "senderscore" proc-exec \
"/usr/local/bin/filter-senderscore -blockBelow 50 \
-junkBelow 80 \
-slowFactor 1000"

listen on all filter "senderscore"

SEE ALSO

smtpd.conf (5)

AUTHORS

BUGS

None known. Debian April 12, 2020 FILTER-SENDERSCORE (8)