[technology taskforce] Slack Engineering Blog : The Case of the Recursive Resolvers (What Happened During Slack’s DNSSEC Rollout)

[Dev Anand Teelucksingh]

"On September 30th 2021, Slack had an outage
<https://status.slack.com/2021-09-30> that impacted less than 1% of our
online user base, and lasted for 24 hours. This outage was the result of
our attempt to enable DNSSEC — an extension intended to secure the DNS
protocol, required for FedRAMP Moderate
<https://csrc.nist.gov/projects/risk-management/sp800-53-controls/release-search#!/control>
—
but which ultimately led to a series of unfortunate events."

https://slack.engineering/what-happened-during-slacks-dnssec-rollout/
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