On Wed, Jun 17, 2026 at 10:00:42 +0200, Dan Malm via mailop wrote: > I'm not the only one seeing this, am I?
See my message from Apr 30: > The certificate used by Hotmail / Outlook / Office 365's MX is issued by > DigiCert Global Root CA, which just got distrusted by the Mozilla Root > Store on April 15, following their Root CA Lifecycle transition schedule: > https://wiki.mozilla.org/CA/Root_CA_Lifecycles > > Although all issuance by DigiCert should have switched to their newer G2 > or G3 roots since March 2023 precisely because of that: > https://knowledge.digicert.com/general-information/digicert-root-and-intermediate-ca-certificate-updates-2023 > > So is Microsoft using some kind of legacy issuing chain here? Are they > aware that this impacts MTA-STS? This will become more visible as the > latest ca-certificates update trickles into Linux distro's... Geert _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
