Postfix main.cf is empty!

[stimpack]

hi,
when i try to access to main.cf to do some edits with nano text editor with

sudo nano /etc/postfix/main.cf

i found it empty and no parameters appear to edit please help

[Shine]

Use mine as a starting point. You may need to change some values...

# postfix config file

# uncomment for debugging if needed
#soft_bounce=yes

# postfix main
mail_owner = postfix
setgid_group = postdrop
delay_warning_time = 4

# postfix paths
html_directory = no
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
queue_directory = /var/spool/postfix
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man

# network settings
inet_interfaces = all
mydomain = change-this
myhostname = change-this
mynetworks = $config_directory/mynetworks
mydestination = $myhostname, localhost.$mydomain, localhost 
relay_domains = proxy:mysql:/etc/postfix/mysql-relay_domains_maps.cf

# mail delivery
recipient_delimiter = + 

# mappings
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
transport_maps = hash:/etc/postfix/transport
#local_recipient_maps = 

# virtual setup
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_alias_maps.cf,
                     regexp:/etc/postfix/virtual_regexp
virtual_mailbox_base = /home/vmail
virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains_maps.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailbox_maps.cf
virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailbox_limit_maps.cf
virtual_minimum_uid = 101
virtual_uid_maps = static:101
virtual_gid_maps = static:12
virtual_transport = dovecot
dovecot_destination_recipient_limit = 1

# debugging
debug_peer_level = 2
debugger_command =
         PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
         xxgdb $daemon_directory/$process_name $process_id & sleep 5

# authentication
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname
broken_sasl_auth_clients = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth

# tls config
smtp_use_tls = yes
smtpd_use_tls = yes 
smtpd_tls_security_level = may
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
smtp_tls_session_cache_database = btree:$data_directory/smtp_tls_session_cache
# Change mail.example.com.* to your host name 
smtpd_tls_key_file = /change/this/path/with/file.key
smtpd_tls_cert_file = /change/this/path/with/file.crt
# smtpd_tls_CAfile = /etc/pki/tls/root.crt

# rules restrictions 
smtpd_client_restrictions = 
smtpd_helo_restrictions = 
smtpd_sender_restrictions = 
smtpd_recipient_restrictions = permit_sasl_authenticated, 
        permit_mynetworks, 
        reject_unauth_destination,
	reject_non_fqdn_sender,
        reject_non_fqdn_recipient, 
        reject_unknown_recipient_domain
# uncomment for realtime black list checks
#	,reject_rbl_client zen.spamhaus.org
#	,reject_rbl_client bl.spamcop.net
#	,reject_rbl_client dnsbl.sorbs.net

smtpd_helo_required = yes
unknown_local_recipient_reject_code = 550
disable_vrfy_command = yes
smtpd_data_restrictions = reject_unauth_pipelining

# Other	options
# email	size limit ~20Meg
message_size_limit = 204800000
mailbox_size_limit = 204900000

..and test test test
..and check check check
..then double check
...and test test test again
until it works

[falko]

Are you sure that Postfix is installed?