I used to be able to send from a distribution group when we had Exchange 2003, these groups have worked since we have upgraded to Exchange 2010. However if we have needed to amend the group details then we have had to change the group from 'Mail Non-Universal' to 'Mail Universal Distribution'
There are to groups in particular which are not behaving the same since being converted to 'Mail Universal Distribution'.
accounts@domainname and support@domainname I can send from the support address but not from the accounts one this has only happened since changing the account group to the 'Mail Universal Distribution' last week. The support group was a long time before that and works fine.
When I try to send a massage as accounts I get this message…
Delivery has failed to these recipients or groups:
You can't send a message on behalf of this user unless you have permission to do so. Please make sure you're sending on behalf of the correct sender, or request the necessary permission. If the problem continues, please contact your helpdesk.
Diagnostic information for administrators: