I used to run a "catch all" e-mail where everything sent to that domain went into my mailbox. I had to stop because I received something like 20 e-mails per sec

I used to run a "catch all" e-mail where everything sent to that domain went into my mailbox. I had to stop because I received something like 20 e-mails per second that had to be filtered. There are also a lot of honeypots e-mail addresses and any mail server sending mail there will be put on a spam-list.