Begin 2022-04-28 12:02:00
End 2022-05-13 14:00:00
Affected Users wanting to communicate with of from

During the regular change of DNSSEC keys that secure DNS traffic, an incorrect key was introduced in the external DNS of for This made disappear from the internet. This error was partly corrected 2022-05-02 at ca. 14:00 hours, but the automatic process used an not accepted encryption. It took ILS until 2022-05-22 to correct that by hand after we eventually noticed the error. Because the DNS answer that doesn’t exist may be cached for 24 hours, the problem was not completely over until 2022-05-13 13:00. The main problems for users were that mail from an address bounced.