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simonrupf/targrey

By simonrupf

•Updated 3 months ago

S25R + tarpitting + greylisting - a tarpit + greylisting policy server

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simonrupf/targrey repository overview

⁠taRgrey

S25R + tarpitting + greylisting - a tarpit + greylisting policy server.

taRgrey is a patch that makes postgrey into a tarpitting policy server. Tarpitting means response delay for blocking spam. taRgrey is designed to decrease false positives.

-- http://k2net.hakuba.jp/targrey/index.en.html⁠

The concept of the Selective SMTP Rejection (S25R) anti-spam system, [...] is so simple that a mail server accepts SMTP accesses from mail relay servers but rejects direct SMTP accesses from end-user's computers.

-- http://www.gabacho-net.jp/en/anti-spam/anti-spam-system.html⁠

⁠Software stack

Postgrey is written for Perl 5.

⁠Environment variables

  • TZ: timezone used for logging, defaults to UTC

⁠Persistent volumes

  • /var/spool/postfix/postgrey: greylist triplets - owner 100, group 101, mode 0770

⁠Network ports

  • 10023/tcp

⁠Usage

make run

⁠Stop

make clean

⁠Build

make build

⁠Build & run

make

⁠Debug image contents

make debug

Tag summary

Content type

Image

Digest

sha256:3e4e2526c…

Size

13.6 MB

Last updated

3 months ago

docker pull simonrupf/targrey