Hey guys,
I was trying to install and configure postfix on my ubuntu 16.04 droplet.

I was stuck here, at the last command before "Managing Mail with the Client" section from https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-on-ubuntu-16-04 : /home/root/Maildir/

According with your tutorial: http://prntscr.com/emzgcm
What I see: http://prntscr.com/emzgjh

After this command, I don't know what to type forward in my terminal.

Would you like to help me please?