Problems renewing cert

Hello I get problems renewing my cert.

I have got the following message:

Attempting to renew cert (pi-mailserver.rgb.buerozentrum.net) from /etc/letsencrypt/renewal/pi-mailserver.rgb.buerozentrum.net.conf authorization procedure. mailgate.buerozentrum.net (http-01): urn:acme:error:connection :: The server could not connect to the cliehttp://mailgate.buerozentrum.net/.well-known/acme-challenge/ntic-qYOBnvR5YGA6_PD0P95rApA-z1fIIGxfQULm6I: Timeout, mail.buerozentrum.tion :: The server could not connect to the client to verify the domain :: Fetching http://mail.buerozentrum.net/.well-known/acme-ch-r4nBBopi6VCLCU: Timeout, pi-mailserver.rgb.buerozentrum.net (http-01): urn:acme:error:connection :: The server could not connect toFetching http://pi-mailserver.rgb.buerozentrum.net/.well-known/acme-challenge/bWPGRZi3wRyxch76pYtZZGl4JGXwG2zctqY8Ty5WmW4: Timeout.

Hi @c.erbguth,

It looks like output got a little corrupted; does it look the same to you here on the forum as what you saw in the terminal output, or did something go wrong when trying to copy and paste it?

Do you remember what command or method you originally used to obtain this certificate? Have you made any changes in the network configuration since you obtained it, like shutting down a web service or adding a firewall rule? It does look to me like these servers aren’t accepting port 80 connections from the Internet, which would be necessary for the http-01 challenge method.

Name: mailgate.buerozentrum.net
Address: 212.77.168.125
Name: pi-mailserver.rgb.buerozentrum.net
Address: 212.77.168.125

IP 212.77.168.125 does not respond on port 80 (nor port 443).

Thank You rg305,
I had installed fireall rules, not to allow unknown networks to connect to the server.
After removing this rules, the update worked.

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