Zimbra 8.7 on CentOS 7 - Install And Configure Zimbra

Hello hi, @linux newbie, I really enjoy your tutorial,... and... can you tell me wich is your Linux OS? and your graphical plataform? may be gnome?.. some template?.... it really looks good!... thanks a lot 4 video and for your answer!

Ohhh... i forgot to add port 7071... i feel so stupid... this vid save my life. Thanks a lot dude!
I have a question, i made my server with dns and zimbra included like you did, but what about if i have a windows server for DNS work? How can i point to that Windows DNS? And what about space for mail and stuff?
Have a good day!

Hi I am trying to install over AWS but I cant, could you make a video for this thx.