I have a sendmail box, for majordomo, which is only really being hit by one box on our network (and that should be the only box sending mail to it since it is acting as a mail gateway to majordomo for all users). What are people's thoughts on the best way to limit delivery to sendmail. IPchains? TCPWrappers? Sendmail rules? My thinking is that compiling with tcpwrapper support is the easiest to configure and administer, so that is what I am looking at doing right now, but I am looking for other input as far as pitfalls of tcpwrappers and sendmail or if there is a better/easier to secure sendmail. Thanks. ____________________________ Mike Neuharth ADCS Technology Specialist http://www.umn.edu/adcs E-Mail : mjn at umn.edu Page Mail : 6126486512 at page.metrocall.com http://supermonkeycollider.dyndns.org/ ____________________________