On our exchange server we have for example
now we also have a second domain. I have configured the exchange so that email@example.com is sent to firstname.lastname@example.org. However, when in outlook (i add email@example.com to 'other email address' in the from drop down) i try to send as firstname.lastname@example.org i get the following send as error;
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.
any ideas on how i can correct this?