Hi, after complete debian 9 reinstall and following the tuto https://www.howtoforge.com/tutorial...e-lets-encrypt-ssl-certificate/#a-for-postfix my MTA asks me to accept security exceptions when I read my mails. howto deactivate TLS1.0 and cipher suites ?
Just enter your question in google and click on one of the fisrt the results. E.g. the question "postfix disable tls 1.0" brings this as first result, which describes how to do that. https://serverfault.com/questions/803920/postfix-configure-to-use-tlsv1-2
