Several entities within the University maintain lists to which subscription is, in essence, mandatory. I have been explicitly asked whether it is technically possible to prevent subscribers from leaving these lists. Has anyone implemented a list exit to either prevent signoff or require owner approval for signoff? I am not interested in flames and rants attempting to educate me that this is not "A Good Thing". I manage the University's central email service, including the list service, and I am already well aware of the potential problems. -- Paul Russell Senior Systems Administrator University of Notre Dame