Basic open relay test script
You can configure a set of tests on a config file and it will reproduce these tests on your server.
This is a very old script (2002) which tries to reproduce the Relay tests made by cygnus.mail-abuse.org. It is probably very outdated and it needs maintenance, although it works fine :)
I just added this script to a repository now based on requests.
Feel free to use and abuse, and drop me a line if you have any questions or suggestions.
Best