smtpd_tls_cert_file=/etc/postfix/postfix.cert
smtpd_tls_key_file=/etc/postfix/postfix.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache