Hello All expert sir,
We use Active Directory 2016 and and all use created previously and email server at Ubuntu. Then we create exchange 2016. AD dns name as ad_domain.com and our email domain as mail_domain.com,
My AD user as 000014@ad_domain.com and his email address is Name.14@mail_domain.com,
Problem is, when we change the database, upgrade or downgrade mailbox size, it automatically change as 000014@ad_domain.com.
Several times I change the email address as correct from AD User attribute and also ECP. but result is same I described.
How can I stop it to automatically change the email address.
