Http validation 400 Connection reset by peer

My domain is:
www.guanxian.org

I ran this command:
win-acme renew the certificate

It produced this output:
{
“type”: “urn:ietf:params:acme:error:connection”,
“detail”: “Fetching http://guanxian.org/.well-known/acme-challenge/zDY9qbHHBBXA6g5vmYaAw0dZ7Vd4_D4
szuvP4HhH2vQ: Connection reset by peer”,
“status”: 400
}
Authorization result: invalid

My web server is (include version):
IIS 8.5.9600.16384

The operating system my web server runs on is (include version):
Windows Server 2012 R2 Datacenter 6.3.9600

My hosting provider, if applicable, is:
Aliyun

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):
iis

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):
win-acme.v2.1.5.742.x64.pluggable

you can accessing http://guanxian.org/.well-known/acme-challenge/configcheck and http://www.guanxian.org/.well-known/acme-challenge/configcheck to check it’s ok.

Hi @lsshcy

checking your domain there is the same error visible - https://check-your-website.server-daten.de/?q=guanxian.org

Result:

Domainname Http-Status redirect Sec. G
http://guanxian.org/ 39.105.76.6 -3 0.737 W
ReceiveFailure - The underlying connection was closed: An unexpected error occurred on a receive.
http://www.guanxian.org/ 39.105.76.6 No GZip used - 8543 / 24383 - 35,04 % possible 200 Html is minified: 121,06 % 11.767 H
https://guanxian.org/ 39.105.76.6 No GZip used - 590 / 701 - 84,17 % possible Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/4 200 Html is minified: 155,09 % 9.707 N
Certificate error: RemoteCertificateNameMismatch, RemoteCertificateChainErrors
https://www.guanxian.org/ 39.105.76.6 No GZip used - 590 / 701 - 84,17 % possible Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/4 200 Html is minified: 155,09 % 9.274 N
Certificate error: RemoteCertificateNameMismatch, RemoteCertificateChainErrors
http://guanxian.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 39.105.76.6 -3 5.254 W
ReceiveFailure - The underlying connection was closed: An unexpected error occurred on a receive.
Visible Content:
http://www.guanxian.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 39.105.76.6 -3 0.720 W
ReceiveFailure - The underlying connection was closed: An unexpected error occurred on a receive.

http + /.well-known/acme-challenge/random-filename doesn’t answer.

Works with my browser.

Looks like there is a bot detection that doesn’t work with that online check and with the Letsencrypt check.

–>> Find and remove that. May be your server, may be your hoster.

i found the problem, i guess from hoster , disable the any not china ip.

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