/etc/postfix/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
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/mail-selfsigned.crt
smtpd_tls_key_file = /etc/ssl/private/mail-selfsigned.key
smtpd_tls_security_level = may
smtpd_tls_auth_only = yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache

smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_CApath = /etc/ssl/certs

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

myhostname = mail.4skill.ru
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination =
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
compatibility_level = 2
message_size_limit = 15630000

# Virtual Domain parameters
virtual_mailbox_domains = 4skill.ru
smtpd_sender_login_maps = proxy:ldap:/etc/postfix/ad_sender_login_maps.cf
virtual_mailbox_maps = proxy:ldap:/etc/postfix/ad_virtual_mailbox_maps.cf
virtual_alias_maps = proxy:ldap:/etc/postfix/ad_virtual_group_maps.cf
virtual_uid_maps = static:1001
virtual_gid_maps = static:1001
virtual_mailbox_base = /var/vmail

# Virtual Transport
dovecot_destination_recipient_limit = 1
virtual_transport = dovecot

# SASL
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth

# Restrictions
smtpd_client_restrictions =
 permit_mynetworks
 check_client_access hash:/etc/postfix/client_access
 reject_unknown_client_hostname

mua_client_restrictions =
 check_client_access hash:/etc/postfix/client_access

smtpd_helo_required = yes

smtpd_helo_restrictions =
 permit_mynetworks
 check_helo_access hash:/etc/postfix/helo_access
 reject_invalid_helo_hostname
 reject_non_fqdn_helo_hostname
 reject_unknown_helo_hostname

mua_helo_restrictions =
 check_helo_access hash:/etc/postfix/helo_access
 reject_invalid_helo_hostname

smtpd_sender_restrictions =
 permit_mynetworks
 check_sender_access hash:/etc/postfix/sender_access
 reject_non_fqdn_sender
 reject_unknown_sender_domain
 reject_sender_login_mismatch
 reject_unlisted_sender

mua_sender_restrictions =
 check_sender_access hash:/etc/postfix/sender_access
 reject_sender_login_mismatch

smtpd_relay_restrictions =
 permit_mynetworks
 permit_sasl_authenticated
 defer_unauth_destination

smtpd_recipient_restrictions =
 reject_non_fqdn_recipient
 reject_unknown_recipient_domain
 check_policy_service inet:127.0.0.1:12340

smtpd_data_restrictions =
 reject_unauth_pipelining
 reject_multi_recipient_bounce

smtpd_etrn_restrictions =
 permit_mynetworks
 reject

disable_vrfy_command = yes
smtpd_discard_ehlo_keywords = vrfy etrn

header_checks = regexp:/etc/postfix/header_check