nooot the easiest to explain in a topic but hopefully I can elaborate better here..

I've created a room mailbox.. 

I've set the in-policy userrights to a specific usergroup.

And I've set the autoattendant so it accepts automatically..

I then tested with a user that isn't a member of that usergroup.. I invited myself.. 

When the invite is sent the inviter gets an email from the room that "you're not allowed" etc. .. so that part works..

But I still receive the request, the room is listed as the room the meeting will take place in, and I can accept the meeting request without problems...

Is this standard? shouldn't the meeting request be cancelled all together? or the inviter be given the option to change the room?

Or perhaps the meeting room should be hidden from all other users than the ones in the usergroup that does have access?.. if that's possible to do?

Hi,

Is it a distribution group or security group?

Whats the scope of the group, Global or Universal?

We can firstly refer to the following article:

http://social.technet.microsoft.com/Forums/exchange/en-US/907f3476-0a37-4c46-9a40-d118ba22e3de/adding-group-as-delegate-of-resource-mailbox-exchange-2010

Thanks,