[outages] Fwd: [dns-operations] slack.com bogus

[Bill Woodcock]

Forwarding from elsewhere, for those who may be wondering why Slack is offline today. 
    
                -Bill


Begin forwarded message:

> From: Peter van Dijk <peter.van.dijk at powerdns.com>
> Date: September 30, 2021 at 8:16:26 PM GMT+2
> To: dns-operations at lists.dns-oarc.net
> Subject: [dns-operations] slack.com bogus
> 
> Hello,
> 
> normally I would not send an email to dns-operations for a domain that
> has gone bogus, but slack.com did something quite interesting today,
> that quite looks like a failed attempt to sign, plus a panic withdraw
> of that.
> 
> Judging from dnsviz, a DS was present in the .com zone for slack.com
> around 15:25 UTC today, and records inside slack.com were correctly
> signed with the related KSK/ZSK set.
> 
> Judging from the DS as I see it coming out of some resolvers, the DS is
> about 15 hours old at this point (so, introduced around 03:15 UTC I
> think). Those cached DSes still have 10 hours to go.
> 
> However, the DS is gone from the .com zone, and the DNSKEYs and RRSIGs
> are also gone. Hence, slack.com is Bogus for a big part of the Internet
> viewer population.
> 
> The text at https://status.slack.com/2021-09/06c1e17de93e7dc2 suggests
> to me that Slack might not actually know what's going on. I do not have
> a contact with them; perhaps somebody in here does?
> 
> Kind regards,
> -- 
> Peter van Dijk
> PowerDNS.COM BV - https://www.powerdns.com/
> 
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