Replies to moderation requests are channeled to DIR/moderator. This file contains an invocation of ezmlm-moderate(1) which invokes ezmlm-send(1) for accepted messages and sends out a rejection notice for rejected messages. It also sends error messages if the message is not found or already accepted/rejected contrary to the moderation message. Thus, if you accept a message already accepted, no error message is sent. ezmlm-clean(1) is also invoked from DIR/moderator for house keeping.