“Message blocked by our bulk email filter”

Someone recently decided it would be fun and interesting to put @soylentred.net addresses in the From: fields of a few million spams, so I’ve been wading through a few reams of "Delivery status notification: failure" emails for a week or so. That’s annoying, but it’s understandable. If a mail server can’t deliver an email it makes some sense to tell the sender. The ones that bug me though are the ones that tell me the email was caught in a spam trap. Effectively they’re saying that they can tell that the email was spam, but they’re bugging me about it anyway. Were these systems set up by people who somehow managed to figure out how to set up and administrate a mail transfer agent without ever learning that From: headers in spam emails are always forged? Pillocks.