Plesk and could not issue a Let's Encrypt SSL/TLS due cURL error 35

Help
1

Hello.

I am with a issue in one plesk server. When I try to generate a let's encrypt certificate plesk returns that error message:

Error: Could not issue a Let's Encrypt SSL/TLS certificate for clientes1.servidoresbrasil.com .

Failed to connect to the Let's Encrypt server https://acme-v02.api.letsencrypt.org .
Please try again later or report the issue to support.
Details

Could not obtain directory: cURL error 35: Encountered end of file (see libcurl - Error Codes)

Any idea of the reason? I use that in others severs and works fine.

2

Hi @audiobras, welcome to the LE community forum :slight_smile:

One possibility is that IP might be blocked by LE.
Please post the IP here for their review.

Possibly:

Name:    clientes1.servidoresbrasil.com
Address: 135.148.33.97

@lestaff please review.

3

The IP is that 135.148.33.97

4

We had blocked this IP address as a DDoS mitigation. It's now unblocked. If you've been using this IP address for more than a few months, then it's very likely that your system is compromised, so please investigate that thoroughly. Thanks!

5

Thanks. I've been using it for less than a month. Probably the compromised system was from the previous user. Is there any way we can check these types of blocks publicly?

6

No, the list isn’t public, but we’re working on automatically expiring blocks after a few days.