Mine

alias_database = hash:/etc/mail/aliases
bounce_queue_lifetime = 1d
bounce_template_file = /etc/postfix/bounce.cf
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
daemon_directory = /usr/lib64/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
default_process_limit = 120
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason}
delay_warning_time = 8h
disable_vrfy_command = yes
header_checks = regexp:/etc/postfix/header_checks
home_mailbox = .maildir/
html_directory = /usr/share/doc/postfix-2.5.5/html
inet_interfaces = 127.0.0.1, 10.0.25.246
local_recipient_maps = 
mail_name = mail_system
mail_owner = postfix
mail_version = 2008
mailbox_size_limit = 52428800
mailq_path = /usr/bin/mailq
manpage_directory = /usr/share/man
max_idle = 200s
maximal_queue_lifetime = 2d
message_size_limit = 52428800
mydomain = expro.pl
myhostname = mailin-ng2.expro.pl
mynetworks = 127.0.0.0/8, 10.0.24.0/22
mynetworks_style = host
newaliases_path = /usr/bin/newaliases
proxy_read_maps = $relay_recipient_maps $relay_domains $smtpd_sender_login_maps $smtpd_recipient_restrictions $sender_bcc_maps
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.5.5/readme
relay_domains = proxy:mysql:/etc/postfix/mysql/relay_domains.cf
relay_recipient_maps = proxy:mysql:/etc/postfix/mysql/relay_recipient.cf
relay_transport = smtp:10.0.26.17
sample_directory = /etc/postfix
sender_bcc_maps = hash:/etc/postfix/hash/sender_bcc
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtp_data_done_timeout = 1200s
smtp_tls_note_starttls_offer = yes
smtp_tls_per_site = hash:/etc/postfix/hash/tls_per_site
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP [ bleble ]
smtpd_client_connection_count_limit = 100
smtpd_client_restrictions = permit_mynetworks
smtpd_data_restrictions = reject_unauth_pipelining
smtpd_helo_required = yes
smtpd_recipient_limit = 250
smtpd_recipient_restrictions = reject_non_fqdn_recipient, reject_unknown_recipient_domain, permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_recipient_access pcre:/etc/postfix/pcre/recipient_access, check_sender_access proxy:mysql:/etc/postfix/mysql/sender_access.cf, check_policy_service unix:private/policyd-spf, check_client_access cidr:/etc/postfix/cidr/faked_ptr, reject_invalid_hostname, reject_unknown_client, reject_non_fqdn_hostname, reject_rbl_client sbl-xbl.spamhaus.org, reject_rbl_client cbl.abuseat.org, reject_rbl_client blackholes.easynet.dl, reject_rbl_client bl.spamcop.net, check_client_access cidr:/etc/postfix/cidr/client_access, check_policy_service inet:127.0.0.1:2501
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_local_domain = 
smtpd_sasl_security_options = noanonymous
smtpd_sender_login_maps = proxy:mysql:/etc/postfix/mysql/sender_login.cf
smtpd_sender_restrictions = permit_mynetworks, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unknown_address, check_sender_access hash:/etc/postfix/hash/exchange_smarthost_map, reject_sender_login_mismatch
smtpd_tls_CAfile = /etc/ssl/postfix/2011/ca.crt
smtpd_tls_cert_file = /etc/ssl/postfix/2011/ble.pem
smtpd_tls_key_file = /etc/ssl/postfix/2011/ble-key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_database = btree:/var/lib/postfix/smtpd_scache_tls
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
strict_rfc821_envelopes = yes
tls_random_source = dev:/dev/urandom
transport_maps = hash:/etc/postfix/hash/transport_map
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/hash/virtual