News: Huge update to spam filters

You may not know it, but every single day we're watching the flow of inbound spam and making adjustments to combat it without risking any increase in false positives. Major changes were made today, and you can see them here:

https://github.com/mxroute/rspamd_rules/commits/master

We'll keep doing our best to reduce inbound spam while being as minimally disruptive as possible.