Hi I have what may be a stupid question. I know that to assign send as rights you use the "Add-Adpermission" commandlet, as send-as is an AD Permission. However, I also see on some mailboxes the SendAs right? Does anyone know what the difference is between these rights, and how one relates to the other? Is the Exchange Mailbox right (SendAs) redundant? Or does it do something? Thanks MattMatthew Abraham

SendAs is an AD permission - so what ever the way should work same for you.Best Rgds, Ashish | Unified Comunication | MCTS | MCITP | Please remember to select option "Propose As Answer" if solution work for you | My posts hold no assurances, no promises, and they measured no rights.

Hi Thanks, I know Sendas is an AD Permission, im just curious as to what the Exchange permission is for. (which shows from a Get-MailboxPermission) Thanks MattMatthew Abraham

It is the same, Exchange reads that permission from AD.James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Thanks. So when does that permission get updated onto the exchange mailbox? eg.. when i run add-adpermission. how long until that shows up on the get-mailboxpermissionMatthew Abraham

When the Exchange information store reads it from AD. It reads from AD every 2hrs by default. Mailbox Cache Idle Limit has been set http://technet.microsoft.com/en-us/library/aa996988(EXCHG.80).aspxJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Hi, More information about mailbox permission: http://technet.microsoft.com/en-us/library/dd638132.aspxPlease 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. Thanks Gen Lin-MSFT

Hi, They are two different permissions. We can use add-mailboxpermission to add the “Sendas” permission on mailbox level (This is why you can see the “send as” permission when running get-mailboxpermission), but it will not take effect. You can delete them by using remove-mailboxpermission. To add the sendAs permission and get it work, we can only use add-ADpermission or exchange management console. More information about mailbox permission: http://technet.microsoft.com/en-us/library/dd638132.aspx Please 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. Thanks Gen Lin-MSFT