Couriergrey is a C++ implementation for greylisting for the Courier mail server.
Distribution archive can be downloaded from here.
The repository of couriergrey is now hosted on GitHub.
Pros for couriergrey
- Fast and memory saving implementation in C/C++ compiled to native code.
- Easy to install, no scripting environment required.
- Support for IPv6.
Version 0.3.2 (2012-04-10)
Support for gcc 4.7. Better error handling when new threads cannot be created. Update in the database dump output.
Version 0.3.1 (2012-01-16)
Support for expiring old entries in the greylisting database. Please read below for information on how this should be set up on your system.
Expiring the database
You should create a cron job that expires your database from time to time.
This cron job should call
couriergrey with the arguments
-e 365 to expire
entries, that are older than one year. Make sure that
couriergrey is run as
the user, that normally accesses the database. E.g. on a standard Debian system
this is the user 'daemon'.
On a Debian system, create the file
the following content:
#! /bin/bash su -c "/usr/bin/couriergrey -e 365" daemon