Can one-way lists be created?

Hi, We have a need to create some class lists where only the instructors can post to the lists, but nobody else. Is this the same as creating a moderated list where: 1. instructor is the moderator 2. dist file contains the e-addresses of all the students in the class 3. reject file contains the same entries as in the dist file Thanks in advance. -- US-Mail: Larry Tai Department of Statistics 368 Kerr Hall University of California, Davis One Shields Avenue Davis, CA 95616 E-Mail: larry@wald.ucdavis.edu or lptai@ucdavis.edu Tel: (530)-752-6085 FAX: (530)-752-7099