This article describes how to configure Postfix and Dovecot to use SSL/TLS to encrypt communication. Before you begin, generate an SSL certificate.
smtp_tls_security_level = may smtpd_tls_security_level = may smtpd_tls_cert_file = /etc/pki/tls/certs/mail.acme.local.cert smtpd_tls_key_file = /etc/pki/tls/private/mail.acme.local.key tls_random_source = dev:/dev/urandom
Make sure smtpd_tls_cert_file and smtpd_tls_key_file refers to your own certificate and key file respectively.
ssl_cert_file = /etc/pki/tls/certs/mail.acme.local.cert ssl_key_file = /etc/pki/tls/private/mail.acme.local.key
Make sure ssl_cert_file and ssl_key_file refers to your own certificate and key file respectively.
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