# See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. #myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = localhost alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases mydestination = /etc/mailname, localhost.localdomain, localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + # SMTP configuration for incoming mail (port 25) # Outgoing mail (port 587) configuration is specified in master.cf # allow all connections (since we want to receive mail from outside) smtpd_client_restrictions = permit # Don't talk to mail systems that don't know their own hostname. # With Postfix < 2.3, specify reject_unknown_hostname. smtpd_helo_restrictions = permit # Don't accept mail from domains that don't exist. smtpd_sender_restrictions = permit # Only accept mail where this server is the final destination smtpd_relay_restrictions = permit_auth_destination, reject # Mail thats not for us gets filtered out by smtpd_relay_restrictions # When the mail is for us, we just accept everything. (could add spam blocklists/user checking etc. here) smtpd_recipient_restrictions = permit # Delivery to dovecot alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases virtual_alias_maps = hash:/etc/postfix/virtual virtual_mailbox_domains = /etc/postfix/virtual-mailbox-domains virtual_mailbox_maps = hash:/etc/postfix/virtual-mailbox-maps virtual_transport = dovecot dovecot_destination_recipient_limit = 1 # additional authentication settings smtpd_tls_auth_only = yes smtpd_sasl_auth_enable = yes smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth