Using postfix, have the linux box acceptemail for the entire domain,
than using transport maps you set the final destination to be the
griupwise box.

Some down falls to this, unless you setup user maps, the groupwise box
will bounce invalid messages, instead of having the postfix box bounce
it during delivery.

I can help you with this if you need the help.

Cheers,
~J

mjn wrote:
> 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
>
> _______________________________________________
> TCLUG Mailing List - Minneapolis/St. Paul, Minnesota
> tclug-list at mn-linux.org
> http://mailman.mn-linux.org/mailman/listinfo/tclug-list
>

--
Jonathan Kline <klinej at msoe.edu>
Milwaukee School of Engineering
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