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Unable to access SSL/TLS Certificates domain's option in Plesk: Could not get Mozilla TLS config

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Alex Davydov
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Plesk for Linux kb: technical

Applicable to:

  • Plesk for Linux

Symptoms

Unable to access SSL/TLS Certificates domain's option in Plesk with the following error:

PLESK_ERROR: Could not get Mozilla TLS config: cURL error 6 could not resolve host: statics.tls.security.mozilla.org; Unknown error (see https://curl.haxx.se/libcurl/c/libcurl-errors.html).

Cause

Name resolution issue.
Namely statics.tls.security.mozilla.org could not be resolved from Plesk server.

Resolution

  1. Connect to the server via SSH.

  2. Add Google nameserver to /etc/resolv.conf file:

    # echo "nameserver 8.8.8.8" >> /etc/resolv.conf

  3. If the issue persists re-enable local firewall rules.

Comments

2 comments

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    Antonio Pavone

    Hi Alex, I have the same error but your resolution doesn't work for me. Any other idea?
    Thanks,
    Antonio

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    Not Applicable

    This issue is also caused by OpenSSL / Plesk updates taking place. Restarting the Plesk services fixes the issue in such cases - 

    systemctl restart sw-engine
systemctl restart sw-cp-server
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