Anonymous Postfix SMTP Relay

[Asphyxia]

If you have any questions or need help setting this up, please register and reply here.

Setting up Postfix [email relay to hide email server IP]

sudo apt-get install mailutils

# 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

# 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 = scales.r4p3.net
smtp_header_checks = regexp:/etc/postfix/header_checks
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination =
relayhost =
mynetworks = 149.202.206.79
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all

And the lovely header_checks file:

root@fmailr4p3net:/etc/postfix# cat header_checks
/^X-PHP-Originating-Script:/ IGNORE
/^Received:/                 IGNORE
/^Message-Id:/               IGNORE

root@fmailr4p3net:/etc/postfix#

root@fmailr4p3net:/etc/postfix# cat /etc/mailname
r4p3.net
root@fmailr4p3net:/etc/postfix#

root@fmailr4p3net:/etc/postfix# cat /etc/aliases
# /etc/aliases
mailer-daemon: postmaster
postmaster: root
nobody: root
hostmaster: root
usenet: root
news: root
webmaster: root
www: root
ftp: root
abuse: root
noc: root
security: root
root: debian
root@fmailr4p3net:/etc/postfix#