We have windows 2012 DC and a user David Cook (user name DCO) has left our organisation and their account was disabled long ago.
I had not deleted their account and still their mailbox is in the exchange and his name listed in the address book (Outlook Client) we don't need this user any more.
Now and new user has joined and her name is Deborah Cook and when I went to create a user name as DCO for this new user not realising there was already one there was a popup saying:
"The user logon name you have chosen is already in use in thus enterprise. Choose another logon name and try again."
I don't need David Cook any more , if I delete him( DCO) and assign this ID to Deborah Cook, will this cause any problem.
Please let me know if this is a right way allotting the user ID that is not used any more to a new user.
Any help much appreciated.
I remember sometime ago when I accidently deleted a user and recreated the emails were not working properly.
for this user, when user were sending email from outlook client the emails were not going to the recreated mailbox AND when sent from OWA the mails were working properly and don't want to get into the same issue again.