I've created a two-way trust between two forests, which works fine for authentication to shares, apps and the like. However, I cannot get Distribution Groups to work. What I'm trying to achieve is: mail sent to one DG in forest 1 to be forwarded/copied/sent
to another DG in forest 2. The way I'm trying to do this is create a Global Distribution Group in forest 2 and add Universal Groups from forest 1 to this group. The ADUC allows me to do this, but when I try to send mail to the Global DG, it's only delivered
to the DG members in the original forest (2). It's like the members from the other forest are completely ignored.
Also, I can't add any users from forest 1 to mailboxes or DGs in forest 2 or vice versa. This is probably by design, but if there's a way to do this, that would be very helpful. It would allow us to share calendars and mailboxes across forests.
Thanks!
[edit: oh crêpe, I should have posted this in the Exchange 2010 section as both Exchange orgs are at EX2010 SP3 RU4 - both forests at 2008 R2 functional level]