Here's what main.cf looks like:
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
inet_interfaces = all
inet_protocols = ipv4
mydestination = $myhostname, localhost.$mydomain, localhost
unknown_local_recipient_reject_code = 550
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
debug_peer_level = 2
debugger_command =
PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
ddd $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.10.1/samples
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES
# Ross Config
myhostname = pbx.example.com
mydomain = example.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = $myhostname
relayhost = [smtp.example.com]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_use_tls = yes
smtp_tls_CApath = /etc/pki/tls/certs/ca-bundle.crt
smtp_generic_maps = hash:/etc/postfix/generic/etc/postfix/generic - First item is the address FPBX is sending as, the second item is the sender address that the mail will be re-written with
root pbx@example.com
asterisk@pbx.example.com pbx@example.com
root@pbx.example.com pbx@example.com/etc/postfix/sasl_passwd
[smtp.exmaple.com]:587 pbx@example.com:*********************/etc/aliases - add the receipient email to the bottom of the file. It should look something like this:
# Person who should get root's mail
root: ross@example.com