Dear Valued Customers,
Date: Start from 1st Feb 2019
DNS software and service providers listed on following link have agreed to coordinate removing accommodations for non-compliant DNS implementations from their software or services.
As a result, domains hosted on servers which do not fully support EDNS0 may be unreachable or suffer from degraded performance.
Background of EDNS0
Extension mechanisms for DNS (EDNS) is a specification for expanding the size of several parameters of the Domain Name System (DNS) protocol which had size restrictions that the Internet engineering community deemed too limited for increasing functionality of the protocol.
What action do I need to take as a customer?
You are advised access to portal https://dnsflagday.net and using the diagnostic tools to enter your managed domain to verify DNS resolver compliant status.
If the tested domain fails the above test, please contact your current DNS operators.
If you need further information and clarifications regarding this announcement, please do not hesitate to reach our support crew (email@example.com)
Thank you very much for your attention.
Technical Support Department