In 90 minutes from now Let’s Encrypt will begin to revoke approximately 2.6% of the SSL certificates that they have issued due to a issuance error.
This will affect a small number of Mail-in-a-Box instances.
To check if your SSL certificate is impacted, please visit the following website:
If that website is not responding or otherwise not available, run the following on the command line.
curl -XPOST -d 'fqdn=sub.mydomain.tld' https://checkhost.unboundtest.com/checkhost
sub.mydomain.tld with the FQDN of your MiaB installation.
This will advise you if your certificate is impacted. If your certificate is revoked you will need to issue a new certificate manually. Please check back here for instructions on how to do so.