My email is a pain. I run my own draisey.ca domain so I have a nice cusom email address but the server gets pounded by vast amounts of spam attempts. To keep my server load down I just reject out of hand any server whose domain name entries are malformed or generated from a purely dynamic ip address. This used to work fine but, with increasing frequency, valid sources of email are misconfiguring their domains and my mail isn’t coming in. I’m down to about a 75% success rate, which really isn’t very good.

I might have to start more complex filtering.