This is yet another spam-labeling script. This one is written in Perl. This script is based on checking the various RBLs and adding a header if any of the relays matches on any of the RBLs.
Unlike many other such scripts, notespam checks every relay in every Received: header, and has a configurable list of RBLs that does not involve modifying the source code. Notespam also has a 'whitelist' of IP addresses or IP blocks that will not be marked, regardless of the content of any blacklist.
Notespam's performance is reasonably acceptable on low to moderate volume mailservers; it has not been tested in higher-volume situations.
At present, notespam documentation is limited to a manpage and a README file.
The current version of notespam is 0.9.0, and it is available here. A GPG signature (signed with my xisp.net key, available here ) is available as well.
MD5 checksum of the package is as follows:
If you have any questions regarding notespam, please feel free to mail me.