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Update - Underscore characters in dnsNames for SSL Certificates
With regards to our update in September regarding the underscores in domain names for SSL certificates, The CAB Forum has now clarified their position:
“All certificates containing an underscore character in any dNSName entry and having a validity period of more than 30 days MUST be revoked prior to January 15, 2019.
After April 30, 2019, underscore characters (“_”) MUST NOT be present in dNSName entries.”
We will be adding the underscore character to the list of invalid characters very soon to stop these any future requests going through.
All customers who have a certificate containing an underscore character will be notified to revoke and request new certificates by the 15th January 2019.
Please contact us on certificates@jisc.ac.uk if you have any further questions.