i can't do it for namemc.com
You probably shouldn't be using sendmail anyways. It will get caught by spam filters.
i had same issue and solved it by edit config.json as this
Install nvm or n and then use one of those to install Node 6.
I just tested installation of NodeBB on fresh OS and its working. There have to be something wrong with my OS.
@dev Post your config you are using for nginx and config.json. It should be obvious when we can see them.
@Bri Yes I did. I follow this guide to install nodebb:
I installed node 7.0.0