Right now there are two forests, both with Exchange 2003 and connected by VPN:
CANADA.COM and USA.COM
We're using Quest to maintain GAL sync across both forests, but due to costs, it will be abandoned (unfortunately). There is a two way trust between the forests.
We're trying to come up with a solution that will solve the following:
1. Give users of the CANADA.COM domain USA.COM email addresses. Right now CANADA.COM users are given accounts on the USA.COM domain for this purpose, and it just isn't right!
2. Several USA.COM users need to view shared calendars in CANADA.COM. Right now, a temporary "shared" user account is created in CANADA.COM for USA.COM folks to log into and view calendars. This definitely isn't right.
3. GAL sync has been spotty at best using Quest and this may be one of the other reasons it is being tossed out. There needs to be some sort of GAL sync between the two organizations.
4. CANADA.COM is trying to allow it's users to manage it's own distribution lists. For example, managers may be able to add/remove users from their own respective distribution lists. How might this be accomplished?
Upgrading to Exchange 2007 is certainly an option if it would mean any of the above can be simplified! Thanks folks!