This feature was introduced in 1.7f, not 1.8a. The change in behaviour is due to LMail 1.2a which translates FAL delivery errors to a format LISTSERV can parse and allows most delivery errors to be processed automatically. You can turn this feature off with "Auto-Delete= No". Note that only hard errors cause deletion. Some systems incorrectly report temporary errors as hard errors but there's nothing LISTSERV can do about it. Eric