ACME-tiny - HTTP Challenge not Passing Due to Web Server Timeouts

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My domain is:

I ran this command: python --account-key /tmp/acme-challenge-private/ --csr /tmp/acme-challenge-private/ --acme-dir /tmp/acme-challenge-public

It produced this output:
“type”: “http-01”,
“status”: “invalid”,
“error”: {
“type”: “urn:acme:error:connection”,
“detail”: “Could not connect to”,
“status”: 400
“uri”: “”,
“token”: “7JWPL4cQfROwcoJdWDbSBQjk1GUazBlbefANMMJRtgg”,
“keyAuthorization”: “7JWPL4cQfROwcoJdWDbSBQjk1GUazBlbefANMMJRtgg.H8VTBUdlNDTMelbIFUBZLHKTU5IuohSSNvVxAuJqjzc”,
“validationRecord”: [
“url”: “”,
“hostname”: “”,
“port”: “80”,
“addressesResolved”: [
“addressUsed”: “”,
“addressesTried”: []

My operating system is (include version): Raspbian 8 (Debian Jessie for Raspberry Pi)

My web server is (include version): Nginx 1.6.2

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): yes - Yunohost (does that count?).

I’m trying to set up a small test server on my Raspberry Pi and I’m getting the error above. the Pi sits behind a router but ports 80 and 443 are routed to it. I can access the challenge url from the outside:

Please help.

I can't; the connection times out. That could be the problem.

I have tested with with multiple clients from outside my network and they all connected.

I get a timeout as well


It seems this is an ISP-level issue where the ports were blocked to incoming connections from abroad.

Thank you all for helping out!
Could an admin delete this (useless) thread please?

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