Can someone tell me please how to configure Exchange 2010 or Windows Server to authenticate user mail access to accept there internal domain credentials from out side the domain not there e-mail.
If someone wants to configure Outlook from outside the company
I let Outlook auto-discover and it is all good but when I put the username as his e-mail address it wont accept it but when I put domain\username (logon to Windows) it worked
Can someone please explain how?
I am not very familiar with Exchange