Recursive DNS in AMS returning SERVFAIL for some zones

时间线

1. 已解决2026年6月15日 13:34 UTC

   Both resolvers in AMS have answered every query cleanly for 15 minutes. Duration: 22 minutes.

2. 已确定原因2026年6月15日 13:20 UTC

   One of the two resolvers has a corrupted DNSSEC trust anchor after an automatic update. We have taken it out of rotation; the second resolver is handling all queries.

3. 调查中2026年6月15日 13:15 UTC

   The recursive resolvers we provide to machines in AMS are returning SERVFAIL for a subset of zones since 13:12 UTC. Machines configured with their own resolvers are not affected.