Exchange 2010 Full Access to mailbox not working.

Hi Guys

Few changes were made to exchange so users can only have "send on behalf of" when using shared mailboxes.

for example : Sent from Bob Smith on behalf of [EmailAddress1]

need to grant full access, then use the client delegate (outlook 2010) and add them to that also.

even if you set permissions to none in Delegate the full access kicks in.

if you remove the users name from delegate (set with no permissions) full access is gone.

has anyone else come across this ?

ive been trolling the net the last 2 days and havernt found a thing . .

any help would be great.