gistfile1.rb

# Don't reveal the OS in the banner.
smtpd_banner = $myhostname ESMTP $mail_name
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Send "delivery delayed" emails after 4 hours.
delay_warning_time = 4h

readme_directory = no

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

# This is mx1.xeriom.net. Change for mx2, mx3, etc.
myhostname = mx1.xeriom.net
myorigin = mx1.xeriom.net

# Map root, abuse and postmaster to real email addresses.
virtual_alias_maps = hash:/etc/postfix/virtual

alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydestination = 
relayhost = 
mynetworks = 127.0.0.0/8
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
local_transport = error:No local mail delivery
local_recipient_maps = 
smtpd_helo_required = yes

# Only allow the service to be used for hosts with final
# destinations within our VM network.
permit_mx_backup_networks = 193.219.108.0/24

# Only accept mail from nice people.
# Read and understand these blacklists policies before you
# use them or you risk losing mail!
smtpd_client_restrictions = reject_rbl_client zen.spamhaus.org,
  reject_rbl_client cbl.abuseat.org,
  reject_rbl_client dul.dnsbl.sorbs.net

# Only relay mail for which this machine is a listed MX backup.
smtpd_recipient_restrictions = permit_mx_backup, reject