The epic spam battle from SpamAssassin (10 + year user) to rspamd.

For many System Administrators that have public facing Mailservers, it is an ongoing battle.. SPAM. Since there is money to make, it will never ever go away, but we can try to mitigate this. Introduction on my usage of anti-spam products For many moons I have used the SpamAssassin product in various forms, simply as a client to check every email on delivery, as daemon where multiple servers check one instance, as part of MailScanner where a single (replicated) database was responsible for storing all bits and pieces combined with local additional rules. This worked fine for years, but, our external MX servers are not the most powerful machines in the world. We need to be selective on what we load on them. And the ever increasing spam battle just makes sure that your memory and processing power is going faster then the system(s) could continuously deliver.More rules, more Anti-Virus, more regular expressions, more downloading, parsing and re2c’ing files that gets harder and harder for the systems every time the amount of rules etc increases. ...