To send mails for root to nikos, edit the /etc/aliases file and type:
Update the alias configuration:
I think in this step you can add custom aliases to make it more clear: such as certadmin: email@example.com, 2ndemail.example.com.
What is your favorite RHEL 7 book to prepare RHCSA & RHCE exams?
What do you think is the most difficult RHCSA 7 topic?
What do you think is the most difficult RHCE 7 topic?