We have an exchange 2013 server setup with two domains. Domain.com is the primary and domain2.com is a secondary domain. All mail routing etc works and we have a few users that have domain2.com as the primary email address.
The issue I am having has to do with public folders send as permissions. We have a PF named info and it is mail enabled. The email addresses attached are email@example.com and firstname.lastname@example.org the primary address is the @domain2.com address. When I give a user send as permissions to this folder they can only send using the email@example.com address. I get the error:
You do not have the permission to send the message on behalf of the specified user. Error is [0x80070005-0x0004dc-0x000524].
When using the firstname.lastname@example.org address. Do any of you have any idea why this is and do I have to do something to allow this?