Hi All, The Exchange Organization Administrators group has a "DENY" flag for "sending on behalf" when listing the permissions for a mailbox. This is inherited. Is there a way of blocking this inheritance for a single mailbox? I have tried the -InheritanceType switch with no success or am I doing something wrong? Any advice would be great. Thanx! Dave

What you need to do is Explicitly add an Allow permission! Remind that Explicit Allowpermission has higher priority than inherited Deny permissions. Deli

Thanx Deli. Could you provide some insight as to what the cmdlet would look like? Thanx.

Set-Mailbox testmbx -GrantSendOnBehalfTo jaredz Deli