Sort of related, i've always appreciated Postfix error 221 "I can break rules, too. Goodbye." Nobody would normally see this curt attitude as it is hidden in t

Sort of related, i've always appreciated Postfix error 221 "I can break rules, too. Goodbye." Nobody would normally see this curt attitude as it is hidden in the protocol, but I find it cute. $ nc 127.0.0.1 25 220 localhost ESMTP Postfix (Ubuntu) GET 221 2.7.0 Error: I can break rules, too. Goodbye. Where: 221 = - 2XX = "(Positive Completion Reply): The requested action has been successfully completed." - 221 specifically, "Service closing transmission channel" 2.7.0 = (class.subject.detail) - 2.X = "Success: Report of a positive delivery action." - X.7 = "Security or Policy Status"