Something

alias_database = dbm:/etc/mail/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/local/sbin
config_directory = /usr/local/etc/postfix
daemon_directory = /usr/local/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
header_checks = regexp:/usr/local/etc/postfix/header_checks
html_directory = /usr/local/share/doc/postfix
local_recipient_maps = $virtual_mailbox_maps
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
message_size_limit = 20000000
myhostname = msmith.soho.on.net
mynetworks = 192.168.1.0/24, 127.0.0.0/8
newaliases_path = /usr/bin/newaliases
queue_directory = /usr/mail/queue
readme_directory = /usr/local/share/doc/postfix
relay_domains = mysql:/usr/local/etc/postfix/mysql_relay_domains_maps.cf
sample_directory = /usr/local/etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtpd_recipient_restrictions = permit_mynetworks,    permit_sasl_authenticated,    reject_non_fqdn_hostname,    reject_non_fqdn_sender,    reject_non_fqdn_recipient,    reject_unauth_destination,    reject_unauth_pipelining,    reject_rbl_client opm.blitzed.org,    reject_rbl_client list.dsdl.org,    reject_rbl_client bl.spamcop.net,    reject_rbl_client sbl-xbl.spamhaus.org,
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = /usr/mail/queue/private/auth
smtpd_sasl_type = dovecot
smtpd_tls_cert_file = /usr/ssl/certs/soho.crt
smtpd_tls_key_file = /usr/ssl/keys/soho.key
smtpd_tls_mandatory_ciphers = high
smtpd_tls_mandatory_exclude_ciphers = aNULL, MD5
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3
smtpd_tls_security_level = may
soft_bounce = no
unknown_local_recipient_reject_code = 550
virtual_alias_maps = mysql:/usr/local/etc/postfix/mysql_virtual_alias_maps.cf
virtual_gid_maps = static:1005
virtual_mailbox_base = /usr/mailboxes
virtual_mailbox_domains = mysql:/usr/local/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/usr/local/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_minimum_uid = 5000
virtual_transport = virtual
virtual_uid_maps = mysql:/usr/local/etc/postfix/mysql_virtual_uid_maps.cf