SpugSpam is a spam filtering software that uses confirm-response technique to block unwanted emails.
The latest revision, 1.1*, includes SPF checking, rule-based pre-filtering, and limited remote management via email. Keep in mind that setting up SpugSpam will likely take a few hours of your time, but it's well worth the effort if you require this type of solution.
To fully utilize the SPF support offered in version 1.1, make sure to download the PySPF package. Doing so will help prevent spammers from abusing authentic email addresses by sending unauthorized messages to their owners.
Recent updates to the software allow for multiple remote patterns within the recvdpat file, as well as a new format for the sender and delivery scripts. This format change improves security and eliminates a potential vulnerability. Overall, SpugSpam is a solid option for those in need of a complex and robust spam filter.
Version 1.2: N/A