Hi,

At around 06:00 UTC this morning deliveries to hotmail/outlook and some other microsoft hosted domains started failing with certificate errors... Openssl shows me this on multiple different machines in multiple locations (:

❯ echo QUIT | openssl s_client -quiet -starttls smtp -connect hotmail-com.olc.protection.outlook.com:25
Connecting to 52.101.9.25
depth=1 C=US, O=DigiCert Inc, CN=DigiCert Cloud Services CA-1
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 C=US, ST=Washington, L=Redmond, O=Microsoft Corporation, CN=mail.protection.outlook.com
verify return:1

I'm not the only one seeing this, am I?

--
BR/Mvh. Dan Malm, Systems Engineer, one.com

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