Hi folks, new strange behaviour.
My test server rely on dynamic IP internet connection, and i am using a Dyn hostname for reach it.
I tried to install Mattermost, i was aware that i needed another hostname for the virtualhost. Therefore, i added another hostname (FDQN) to Dyn, setup the same public ip of the current hostname.
This hostname was also added at Dynamic DNS panel, with login data.
And i told to Mattermost that was it’s virtual host.
Last step was try to receive another Let’sencrypt Certificate. But i got an error…
Failed authorization procedure. mattermost.public.host (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching https://mattermost.public.host.well-known/acme-challenge/1UI6IhIN2NbjxAAVbQijb1IzIOrVF5W2s6mVAdj6tAw: Error getting validation data
I think that something is going wrong between the hostname and /well-known/acme-challenge/.
There is a dot, not a slash…