Hello,
how to setup mattermost whitout ssl behind nginx proxy manager that provide ssl certificate with lan forward over http? There is no clear explanation for the proxy and for mattermost.
I was able to get this to mostly work using NGINX proxy manager. The only thing that does not work is under system console > web server > Site URL, the Test Live URL does not work. Saying Test unsuccessful: This is not a valid live URL.
However, everything else works.
I think the problem is similar to the problem I’m having with ghost crm behind a reverse proxy. It’s something to do with the header being wrong, but so far I have not figured out the solution to this problem.
Here’s my setup on NGINX proxy manager.
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Hi, I just wanted to follow up on this. My hunch about the x-forwarded-proto header was incorrect. I was having a firewall issue that prevented the mattermost server from connecting to the nginx server. After that was fixed, the Test Live URL now works.
Here are my updated nginx server settings.
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You’re an absolute gem for following up with these solutions/clarifications, Mike! Big cheers! 
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