Hello there experts
We have migrated from Exchange 2003 to Exchange 2007 which was basically part of SBS 2003 to SBS 2008 migration.
It was a clean build of SBS 2008 so all data including emails and public folders were manually copied across from the old server to the new server.
One of the public folder is company calander which obviously had quite a few appointments in it which we exported to PST from old server and then imported back in the new server
Now what is happning is that all the appointments that came from old server are somehow corrupted. This is simply my guess and I don't know if this is correct.
The reason is that when a user, who has full access (owner or publishing editor role) on a public folder, which is a calander, opens an appointment that was imported, and tries to invite someone in addition to who is already invited or delete someone who is already invited....it comes up with a message saying "you do not have permission to send as this user".
The user can change the appointment without any problem, if it doesn't involve sending an update to people invited in an appointment. But if there is any change that instigates updating the invitees by sending them the update through email, it fails and the user gets the below bounce back email.
"You are not allowed to send this message because you are trying to send on behalf of another sender without permission to do so. Please verify that you are sending on behalf of the correct sender, or ask your system administrator to help you get the required permission"
Diagnostic information for administrators:
This is the same typical error message when you try to send an email as someone else without the "send as" permissions.
But this is a public folder.
This probably means the user doesn't have the "send as" permission on the public folder itself.
But if that is true then why can the users send invitations to brand new appointments?
The issue seems to be only on those appointments which were imported from old server.
if the user creates a brand new appointment and invites someone, the invitee does get the email fine and we have tested that and also we don't get any bounce back.
So can someone help here?