Postfix Conf

main.cf

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
default_database_type = btree
default_process_limit = 80
html_directory = no
local_destination_concurrency_limit = 8
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/share/man
mydestination = $myhostname, dm2, localhost, localhost.$mydomain
myhostname = dm2.blah.com
mynetworks = 127.0.0.0/8
myorigin = $myhostname
newaliases_path = /usr/bin/newaliases
owner_request_special = no
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
relayhost = [mailout.blah.com]
sample_directory = /usr/share/doc/postfix-2.3.3/samples
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_use_tls = yes
unknown_local_recipient_reject_code = 450
virtual_mailbox_domains = btree:/etc/postfix/maps/local-domains
virtual_mailbox_maps = btree:/etc/postfix/maps/dovecot-userlist
virtual_transport = dovecot

master.cf

dovecot                 unix  -       n       n       -       -       pipe
  flags=DRhu user=mail:mail argv=/usr/libexec/dovecot/deliver -c /etc/dovecot/dovecot.conf -f ${sender} -d ${user}@${nexthop} -n -m ${extension}