I've more recently switched to rspamd from spamassassin. I've been using SA for more than a decade on my own server, but have been getting frustrated with its spam matching more recently. I've tweaked it and tweaked it (including doing things like telling it to trust pyzor more) and still obvious stuff is leaking through. That's even with a cron job running to train itself on email I move to a specific folder. There's certain patterns of spam that just won't go away.
CPU usage was noticeable for it, too. I started looking for compiled alternatives, and rspamd fit that need. It's faster than SA, and using less resources, and seems to be hitting better than SA filtering.
CPU usage was noticeable for it, too. I started looking for compiled alternatives, and rspamd fit that need. It's faster than SA, and using less resources, and seems to be hitting better than SA filtering.