Dear Sir,
I would like to ask about exchange mail account. Now I am using exchange 2013 server and using own DNS server. I create user, eg(mgmg@test.it, kyawkyaw@finance.test.it ,naungnaung@admin.test.it) .finance and admin are Organizational Unit. And then we also create DNS address look like (https://mail.test.it , https://mail.finance.test.it , https:mail.admin.test.it) . Our AD domain name is "test.it" . Can I change the mail account name from mgmg@testl.it to mgmg@finance.test.it. I cannot login using naungnaung@admin.test.it to OWA but I can login using naungnaung@test.it that is not created with this name.
Remark: my writing is poor, so patient me and help me