On 02/21 01:31 , mjn wrote: > 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. I've seen a similar situation (due to bureacratic fiefdoms in a large city government); where every one of thousands of users had an alias in a mail proxy, directing their mail to one of a couple of mailservers, based on which departmental fiefdom you belonged to. The possibilities that occur to me are: - use a replicated LDAP server to store your aliases file. Each mailserver keeps a copy of it. If you're married to Groupwise, this would depend on that machine being able to use LDAP for its equivalent of the aliases file. - Set up a couple of Linux mail proxies, and let them do your spam/virus filtering. Copy your aliases file with rsync or the like. This may be the simplest solution, if it's possible to just throw hardware and money at the problem. -- Carl Soderstrom Systems Administrator Real-Time Enterprises www.real-time.com