Error while using specific IP

Hello.

I am a representative of hosting company, and our clients have problems with certificate issue from network 85.239.42.0/24, for example last incident was with 85.239.42.239 and domain diplomtop.ru (now its work, because certificate was generated with third-arty service). When we try issue certificate from server's IP with panel VestaCP, get error 400.

This is 100% problem with IP, domains pointed correctly, if we change IP for another - certificate installation goes without any problems.

I think there are some sanctions from LE side for this IP or subnet, and i really hope that you can help solve this problem. Otherwise, we need to change addresses on a large number of servers.

Thank you.

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Hi @vshipunov

the exact error message is required.

Letsencrypt doesn't block ip ranges. So it may be

  • a blocked dns (or)
  • a blocking instance in that subnet (or)
  • a buggy configuration (bad name servers etc)
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