We're looking to change how our mail system is set up and the problem we have is that there are two distinct hosts in our domain with two distinct sets of users/lists on them. We have a Groupwise system which contains all of the users and a FC3 system which is going to be running Postfix and handling all of our listserv (mailman and majordomo) traffic. As it is now, we've got Groupwise out front with aliases created for every single list alias (list, list-owner, etc) which redirects e-mail to those objects (2000+) over to the current linux system. Some upgrade problems with Groupwise made us want to ditch this setup as the possability of having to individually modify 2000+ objects was unreasonable to fix a temp problem. Both mailhosts send/receive as mail.domain.edu without issue What we'd like to do is move the linux system out front (adding ClamAV, etc) as most of our mail traffic is from lists and use Postfix for delivery. The thing that I am struggling with--and it may be a terminology problem--is how to setup the environment so that with one primary mailhost and a secondary so that mail which cannot be delivered to the linux box is passed along to Groupwise to look for a recipient without having to manage 1000's of aliases. Anyone have pointers/recommendations on what the best way to accomplish this might be? My searching has turned up little and anything remotely applicable and it is usually the opposite environment (multiple domains on a single host). Any ideas? Thanks. -- _______________________________________________ Mike Neuharth ADCS Technology Specialist http://www.umn.edu/adcs =============================================== E-Mail : mjn at umn.edu Page Mail : 6126486512 at page.metrocall.com _______________________________________________ "What is important, it seems to me, is not so much to defend a culture whose existence has never kept a man from going hungry, as to extract, from what is called culture, ideas whose compelling force is identical with that of hunger." -Antonin Artaud