I have a user
firstname.lastname@example.org and i believe all the UPN settings are right, OU settings, etc...
I have another user
email@example.com is working just fine, the SMTP email i set for it (both default/primary) stay how i set them and OWA/Exchange work fine.
User firstname.lastname@example.org - whenever i say "add SMTP email address email@example.com" to it, it stays that way until i hit okay, if i go back into the properties of that user it has changed the primary smtp back to "firstname.lastname@example.org" which is the internal domain name of our exchange/AD. And thus OWA bounces emails as well as recepient servers b/c it has no idea who email@example.com is. Am i missing a step somewhere in having this user use UPN firstname.lastname@example.org and not care about email@example.com at all?