hi all, Exchange 2007 SP2 user are coverted to linked mailbox which has master account in the account forest. even though the permission from resource forest are there, users with linked mailbox can not use send as. how should I assign the send as rights between the linked mailboxes since their account is in the account forest and mailboxes are in the resource forest? in the account forest through active users and computers console, right? as I can not assign the user from account forest to the resource forest through exchange console. Thank you for the help.

Hi John, I think the followings link will help you. OWA 2007- Assign Send As Permissions to Linked mailbox in Trusted Domain: http://social.technet.microsoft.com/Forums/en/exchangesvrclients/thread/5fdf4cd7-3543-4b5d-94cc-317446ddaa46 Is it Possible to Give Full Access Permissions to a Linked Mailbox: http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/b43068c7-0312-4ea1-83dc-534642aed218 Best regards, SerenaPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.