I stopped using SpamSieve earlier this year because it wasn’t working well - but the other things I tried after weren’t either.
So I reinstituted SpamSieve a few days ago. It was missing everything.
I reset the corpus, and I reset the whitelist yesterday (the whitelist had >20k rules, most of which were active).
It has been doing much better today, however: in less than a day, my whitelist has grown to over 7,480 rules, most of which are active.
Now, though I receive lots of emails, I haven’t trained anywhere near that number yet.
So it appears that SpamSieve is going through my mailboxes and auto training on old mail!?!? Or what else could be happening? I haven’t cleared out all the spam from the >10,000 messages that are still around in my inbox and various mailboxes. If SpamSieve is using these (rather than only NEW mail), I’m sure it will go back to poor behavior quickly.
What can I do to prevent my whitelist from blowing up like that? What exactly is SpamSieve doing to determine that an address belongs on the whitelist (apart from me manually marking it as Good)?