Exchange 2013 users cannot login with email but can domain\username

Hey Experts,
I cant seem to find the reason for it but i have a exchange 2013 server up and running.  Users cannot seem to loing with there email address  user@domain.com  but they can login with domain\username just fine.  

Does anyone know why this would be or what i can check to try to resolve this?  Outlook defaults to the email address for login which causes a lot of questions to be directed at me.

This is Exchange 2013U1 running on Server 2012.
Clients are using Outlook 2010 and 2013
tsukrawAsked:
Who is Participating?
 
Marc DekeyserConnect With a Mentor Sr Premier Field EngineerCommented:
you can only login with user@domain.com   if the UPN exists and is set as primary:
http://support.microsoft.com/kb/243629
0
 
tsukrawAuthor Commented:
Ok so if i am understanding this correct you have 3 options?
1) domina\username
2) username
3)email address (based of userPrincipalName)

Now in our case we can actually just use username and that is going to work just fine.  But i did test with using email address. I looked up the userPrincipalName for some users withing our domain and they all are usernam@domain.local non of them our our email domain. Do i have to go through each user and add that to them or does the KB you posted for adding the domain.com as a kind of sub option?
0
 
Marc DekeyserSr Premier Field EngineerCommented:
It's pretty much a user by user thing. You could probably script it if you'd like :)
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.