curl https://exampleconfig.com/api/v1/config/original/8802fc883e2a3c898c3fd49851bc53b2?hint=main.cf
wget -O main.cf https://exampleconfig.com/api/v1/config/original/8802fc883e2a3c898c3fd49851bc53b2?hint=main.cf
# 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 $mail_name (Debian/GNU) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on # fresh installs. compatibility_level = 2 # TLS parameters smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${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. smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination myhostname = b012e090f537 alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases mydestination = $myhostname, b012e090f537, localhost.localdomain, , localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all inet_protocols = all
sudo apk add postfix
sudo apt update && sudo apt install postfix
sudo yum install postfix
sudo apt update && sudo apt install postfix
Use this original configuration file when you need to restore Postfix to its default state after misconfiguration, during fresh installations, or as a baseline for customization. It's particularly useful for troubleshooting when your current config isn't working properly.
Download this file and replace your current configuration at /etc/postfix/main.cf
. Make sure to backup your existing configuration first, then restart the Postfix service to apply the changes.
This is the factory-default configuration that ships with Postfix on Debian 9 (Stretch). While it provides a secure baseline, you should review and customize security settings based on your specific production requirements and compliance needs.
This configuration is specifically from Debian 9 (Stretch). Different operating systems and versions may have slightly different default settings, security patches, or feature availability. Check the compatibility section above for other OS versions.
Yes, this original configuration is excellent for troubleshooting. Compare it with your current settings to identify modifications that might be causing issues, or temporarily replace your config with this one to isolate problems.