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