Hello Guys, I have an issue with postfix and DST Root CA X3, the connection to smtp server has failed because it says that cert has expired. When I run the command "openssl s_client -starttls smtp -crlf -connect mail.smtp.net:587|openssl x509 -noout -dates" I got: How can I remove the expired certificate in order to continue sending emails? Thank you for your time!! Zague
Did you remove it like this already? https://www.howtoforge.com/communit...-expiration-september-2021.87761/#post-427870 and did you check that the expired cert is not used in SSL chain cert in postfix?
Here is a YouTube from lets encrypt that describes what happens when the DST X3 cert expires and what mitigations that can be done, amongst others the one given in till's reference (at 17:23).
