this post was submitted on 12 Jul 2025
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Trouble setting Let's Encrypt certificates for Pangolin (sopuli.xyz)
submitted 2 days ago by bergetfew@sopuli.xyz to c/selfhosted@lemmy.world
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I've recently gotten into self hosting. I have a VPS and a domain name and decided to set up Pangolin as a reverse proxy to my local homelab.

During the options in the installation, I was asked to provide an email address for "generating Let's Encrypt certificates". I don't have a clue what what role my email address plays into this nor what email I should provide for the setup, so I just gave one of my personal email address. Everything worked fine and the service was completely set up in the VPS.

However, logging into the dashboard, I was informed by my browser that the certificate of the website is self signed and visiting the page may be dangerous. Although I was later able to access the panel with https enabled, I felt this setup is not okay and decided I would need to fix it.

Unfortunately I have no idea how certificate issuing works. I tried to search for a solution online and read the docs for Pangolin and Traefik as well as rewatch the tutorial through which I set up Pangolin, but either they tend to skip explaining the email thing or go too much into detail without even explaining where to start. I also checked my inbox to see if the CA pinged me or something but to no avail.

I feel like I'm missing something in my setup which was apparent to everybody else. I would really appreciate if someone could help me ELI5 what the root cause of this 'email' problem is and how to fix it. I am willing to set up the service all over again or edit the config files if needed but I just need to know what to do.

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[–] bmcgonag@lemmy.world 3 points 1 day ago

How long did you wait to visit the site after adding it to pangolin? I ask, because if you set it up and go within 30 seconds of saving you may see the cert warning initially. It can LetsEncrypt time to verify a site and issue a cert. it’s usually pretty fast, but I’ve seen it take up to 30 seconds or a little longer.

I’ve hit the same thing where I setup a site through Pangolin and go to it too fast, but if I just close the tab and wait about 20 seconds then go again, it all comes up with a proper cert. hope that helps.