I did this but a nerd sniped myself. I had out addresses like {name}-{hmac}@me.example. These addresses then bypass the spam filter and if they start spamming me I block them.

The problem is that I still need a general address for my website, resume, HN profile, Git author info... So I still accept mail to a handful of publicly available addresses. However it does let me play with the spam rules a bit more. Signed: auto-accept, known address: moderate spam filter, unknown address: heavy spam filter.