Spammers are using my domain name and making up email addresses off of it to use as the from address. There are thousands of bounces, out of office replies, delivery status notifications, and other failure notifications. So far I have deleted probably close to 5000 of these.
It is my own fault for having a catch-all for the domain (since been deleted). I liked the catch all for a number of reasons.
Spammers are scum.