How to check your secure connection In order to check your mail server connectivity over SSL/TLS, the online checkers listed below can be used. You need to specify the server hostname and port number or an existing email account and run the test. SSL-Tools: https://ssl-tools.net/mailservers CheckTLS: https://www.checktls.com/index.html MXToolbox: https://mxtoolbox.com/diagnostic.aspx High-Tech Bridge: https://www.htbridge.com/ssl
1. Генерируем сертификаты Добавляем секции отвечающие за TLS ee /usr/local/etc/postfix/main.cf # TLS smtpd_use_tls = yes smtpd_tls_security_level = may smtpd_tls_auth_only = yes smtpd_tls_key_file = /usr/local/etc/postfix/device.key smtpd_tls_cert_file = /usr/local/etc/postfix/device.crt smtpd_tls_CAfile = /usr/local/etc/postfix/rootCA.pem smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom # Aутентификация SMTP smtpd_sasl_auth_enable = yes smtpd_sasl_exceptions_networks = $mynetworks smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients …