Hello list since this weekend we have the issue that our postfix seems to be unable to verify TLS certs presented by Microsoft. We get
> Server certificate not verified all over the postfix logs. Manually testing shows the same > openssl verify -verbose <(echo | openssl s_client -connect 52.101.73.19:25 -starttls smtp 2>/dev/null) > C = US, ST = Washington, L = Redmond, O = Microsoft Corporation, CN = > mail.protection.outlook.com > error 20 at 0 depth lookup: unable to get local issuer certificate > error /dev/fd/63: verification failed the system is a Debian 12 with latest updates. Did Microsoft mess it or do we mess it? Anyone else experiencing such issues with MS atm? Kind regards tobi _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
