did they get new exchange accounts? How are they trying to send the invites?
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"Jack" <Jack@discussions.microsoft.com> wrote in message
news:8FF8A205-B306-4D92-A845-4FFAAD58B7AE@microsoft.com...
> I recently migrated a number of users from one Exchange server to another
> (2003 to 2007). Basically we brought them in-house by exporting from the
> old
> system and running "Import" on the new one. The migration went smooth with
> no
> problems. Soon after however, the users started reporting that when they
> try
> to send a exisiting Calendar invitation (one that was imported) they get
> errors. In one case the error read that "UserA is not allowed to send on
> behalf of UserA" which is really hard to explain to the usuers (basically
> a
> user is not allowed to send on his own behalf). I messed around with
> permissions but that did not help. Has anyone come accross this and found
> a
> workaround? The easy one is to recreate the message but I have users with
> a
> lot of appointments.
> Thank you in advance,