LCDUNG.

# Change postfix TLS parameter to use dovecot 
#smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
#smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
#smtpd_tls_cert_file=/etc/ssl/certs/dovecot.pem
#smtpd_tls_key_file=/etc/ssl/private/dovecot.pem
#smtpd_use_tls=yes
#smtpd_tls_auth_only = yes

#Handle SMTP authentication using Dovecot
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes

smtpd_recipient_restrictions =
        permit_sasl_authenticated,
        permit_mynetworks,
        reject_unauth_destination

# other destination domains should be handled using virtual domains 
mydestination = localhost

# using Dovecot's LMTP for mail delivery and giving it path to store mail
virtual_transport = lmtp:unix:private/dovecot-lmtp

# virtual mailbox setups
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
virtual_alias_maps = mysql:/etc/postfix/mysql/virtual_alias_maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql/virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql/virtual_mailbox_maps.cf

# DKIM lcdung.top
smtpd_milters = inet:127.0.0.1:8891
non_smtpd_milters = $smtpd_milters
milter_default_action = accept

milter_protocol = 2