I need your kind advice in the following issue:
I have exchange server 2016 and recently one of domain users had transfered from one department to another. It was required to prevent his access to his mailbox and user account so as usual I&amp;#39;ve disabled his domain account and mail address.
After a couple of days I had to create a new account for him with new mailbox but It was required to give him the same login username.
At first I have changed his login name in active directory then all his new account and new mail were created correctly without any problems. But the problem is when I try to add his mail account to android outlook app he logs in successfully but his mailbox stays empty and doesn&amp;#39;t retrieve any mails from the server. Also, he cannot send any email from his mobile device.
Is there any process can I do in order to fix this issue?
Thanks in Advance