Change AcmeTool to not listen on port 80 #809
Description
Sometimes relay operators report certs aren't getting renewed and it tends to be an issue with acmetool wanting to bind to port 80 but Nginx already has port 80. This can be solved by just reverse proxying to acmetool instead.
location /.well-known/acme-challenge/ {
proxy_pass http://127.0.0.1:402;
}
then in the acme config you tell it to listen on port 402 instead
https://hlandau.github.io/acmetool/userguide#web-server-configuration-challenges