I'm finding some incoming emails are incorrectly being placed in my spam folder instead of inbox.
One common factor is that the mail source contains the line
X-CNFS-Analysis: v=2.4 cv=bLzTnNyZ c=1 s... etc..
followed by X-Spam-Action: folder Spam
The emails are from mythic-beasts.com mail server. A couple of days ago I was getting emails from mythic beasts OK without them being classified as spam. I recently added a mail forwarder for a website hosted at mythic-beasts. It uses SPF and DKIM, which seem OK. Is it a coincidence that 'normal' emails from mythic-beasts support have now started to be put in spam?
I can't solve this using filter rules, the above overrides them.