Hello! We are experiencing problems issuing certificates on two Plesk servers. Same error. Many users with this error found that their IP addresses were blocked by LE. Is it possible to check ours? My domain is: elgift.pp.ua I ran this command: Plesk LetsEncrypt plugin It produced this output: …

[image] erfe: So what is this if not IP blocking? Definitely something else. I'd look for an IPS [or something of the sort] that is inline with that system - but not when it uses the alternate path [via the VPN].

We use the same software sets (OS, ISP, plugins, etc) in all of our deployments. LE works correclty wherever the configuration is. The two mentioned servers are both in the same public network subnet. LE on them works correctly too, but only when their network addresses are changed. Can we just ask…

[image] erfe: Can we just ask LE crew here to CHECK if our IPs are not in a blocklist? Asked and answered: [image] cURL error 35. Are our IPs blocked? Help Y…

It looks like a conclusion. I don't think there was a check. Here is the same case - Plesk and could not issue a Let's Encrypt SSL/TLS due cURL error 35 Checked - unblocked - resolved.

If you can reach the server [by any means] on port 443, then your IP is NOT being blocked. Yes, that is a logical conclusion. There is no need to "check" it.

Do you NOT understand how you showed proof that your IP is NOT being blocked? with: [image] erfe: The output of openssl s_client -connect acme-v02.api.letsencrypt.org:443: Unless... OpenSSL is being NAT hiden with a different IP than the cURL requests! OR Somehow one or the other is usin…

I do not know how LE IP blocking works. Maybe if I'm blocked, I can reach the server, but can't issue a certificate.

No. Blocked IPs can't get anything at all. Totally blocked.

[image] rg305: is being NAT hiden with a different IP No, there's no NAT. Direct routable public IP.

cURL error 35. Are our IPs blocked?

Help

erfe November 3, 2023, 10:19am 22

What about the same case? Nobody asked there if TS could reach the server. But the error was exactly the same.

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cURL error 35. Are our IPs blocked?

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