In general, reason for any service outage would need explanation by the service provider. Service provisioning is so complicated (layers upon layers) that what's seen on the surface is hardly representative of what's inside. A rule from years of developing monitoring scripts: It's one thing to detect and measure symptoms, it's an entirely different thing to make a diagnosis. On 10/16/18, 11:50, "ksk-rollover on behalf of Davey Song(宋林健)" <ksk-rollover-bounces@icann.org on behalf of ljsong@biigroup.cn> wrote: I had several bounce mails today from my Gmail to IETF's mail. It's weird. The response from the remote server was: 550 5.7.1 mail w9G8HQ5a028992 from 2607:f8b0:4864:20::72a rejected by DCC The bounce may irrelevant with KSK. But an question came up to my mind that how can a user identify a failure caused by KSK rollover? Davey > -----邮件原件----- > 发件人: ksk-rollover [mailto:ksk-rollover-bounces@icann.org] 代表 Edward > Lewis > 发送时间: 2018年10月16日 0:08 > 收件人: ksk-rollover@icann.org > 主题: [ksk-rollover] First Root KSK Rollover Successfully Completed > > LOS ANGELES – 15 October 2018 – The Internet Corporation for Assigned > Names and Numbers (ICANN) has determined that the first-ever changing of > the cryptographic key that helps protect the Domain Name System (DNS) has > been completed with minimal disruption of the global Internet. It was the first > time the key has been changed since it was first put in use in 2010. > > After evaluation of the available data, there does not appear to be a significant > number of Internet end-users who have been persistently and negatively > impacted by the changing of the key. > > The few issues that have arisen appear to have been quickly mitigated and > none suggested a systemic failure that would approach the threshold (as > defined by the ICANN community) to initiate a reversal of the roll. In that > context, it appears the rollover to the new Key Signing Key, known as KSK 2017, > has been a success. > > At this point, there are no indications it is necessary to back out of the rollover > and ICANN will now proceed to the next step in the rollover process: revoking > the old KSK, known as KSK 2010 during the next key ceremony in the first > quarter of 2019. > > "This successful exercise of the infrastructure necessary to roll the root zone's > key has demonstrated it is possible to update the key globally," said David > Conrad, ICANN's Chief Technology Officer. "It also provided important insights > that will help us with future key rolls," > > The final decision to roll the root zone Key Signing Key (KSK) was made by > ICANN President and CEO Göran Marby after reviewing the outcomes of the > efforts of ICANN and others, particularly in the Domain Name System (DNS) > technical community. These outcomes were the result of significant global > outreach efforts, in consultation with the ICANN community, and after > extensive analysis of available data. > > With the final approvals in place, ICANN implemented the 16 September 2018 > resolution of ICANN's Board. The resolution stated that the organization should > proceed with its revised plans to change or "roll" the key for the DNS root on 11 > October 2018. > > To learn more about the Root KSK Rollover, visit its dedicated webpage and > primary source of information: https://urldefense.proofpoint.com/v2/url?u=http-3A__www.icann.org_kskroll&d=... > > About ICANN > ICANN's mission is to help ensure a stable, secure, and unified global Internet. > To reach another person on the Internet, you need to type an address – a name > or a number – into your computer or other device. That address must be > unique so computers know where to find each other. ICANN helps coordinate > and support these unique identifiers across the world. ICANN was formed in > 1998 as a not-for-profit public-benefit corporation with a community of > participants from all over the world. > > https://urldefense.proofpoint.com/v2/url?u=https-3A__www.icann.org_news_anno... > > _______________________________________________ > ksk-rollover mailing list > ksk-rollover@icann.org > https://mm.icann.org/mailman/listinfo/ksk-rollover _______________________________________________ ksk-rollover mailing list ksk-rollover@icann.org https://mm.icann.org/mailman/listinfo/ksk-rollover