Stuff

strict_rfc821_envelopes = yes
smtpd_etrn_restrictions = reject

# Added Thu Aug 21 17:43:43 EDT 2003
smtpd_helo_required = yes
smtpd_helo_restrictions =
 permit_mynetworks
 reject_invalid_hostname
 reject_non_fqdn_hostname
 permit
smtpd_sender_restrictions =
 permit_mynetworks
 reject_unknown_sender_domain
 reject_non_fqdn_sender
 permit_sasl_authenticated
 permit_tls_clientcerts
 warn_if_reject reject_unverified_sender
#smtpd_recipient_restrictions = reject_non_fqdn_recipient
#message_size_limit = 25000
# one meg:
#message_size_limit = 1024000
header_checks = regexp:/usr/local/etc/postfix/header_checks
maps_rbl_domains = relays.ordb.org, proxies.relays.monkeys.com, dnsbl.ahbl.org,
rhsbl.ahbl.org
html_directory = no
syslog_facility = mail
syslog_name = postfix
virtual_alias_domains = example.com
virtual_alias_maps = hash:/usr/local/etc/postfix/virtual
disable_vrfy_command = yes
smtpd_banner = NO UCE ESMTP
# SASL
smtpd_use_tls = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl2_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain =
broken_sasl_auth_clients = yes
# This will only allow authentication of users once TLS has been
# started and information being transferred is encrypted.
smtpd_tls_auth_only = yes
# TLS
smtp_use_tls = yes
smtpd_use_tls = yes
smtp_tls_note_starttls_offer = yes
smtpd_tls_key_file = /usr/local/share/courier-imap/imapd.pem
smtpd_tls_cert_file = /usr/local/share/courier-imap/imapd.pem
smtpd_tls_CAfile = /usr/local/share/courier-imap/imapd.pem
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
smtpd_recipient_restrictions =
 permit_mynetworks
 reject_unauth_pipelining
 reject_unknown_recipient_domain
 reject_non_fqdn_recipient
 reject_non_fqdn_sender
 permit_sasl_authenticated
 permit_tls_clientcerts
 reject_unauth_destination
 reject_rbl_client relays.ordb.org
 reject_rbl_client list.dsbl.org
 reject_rbl_client sbl.spamhaus.org
 reject_rbl_client cbl.abuseat.org
 reject_rbl_client dul.dnsbl.sorbs.net
 reject_rbl_client proxies.relays.monkeys.com
 reject_rbl_client opm.blitzed.org
 reject_rbl_client blackholes.wirehub.net
biff = no