sending mail problem - ubuntu 8.04 - ispconfig 2.x.x - postfix

[nakalskit]

Hi all,

i follow step by step guid in this howtoForge on installing ubuntu 8.04 server succesfully with no errors occurs during installation. i also managed to get ISPconfig install n running.

so, i've create a site called smsdssb and a users nazri@smsdssb.com.my, info@smsdssb.com.my. i configure my outlook express to send and received mail thru the new server at 192.168.1.100. i can send/received email from and to both account.

my problem is when i tried to send email to the internet. i can not send email to gmail / hotmail / yahoo mail or any other mailserver. outlook express gave me this following error msg

"The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'nazrisms@gmail.com'. Subject 'test internal to external mail', Account: '192.168.1.100', Server: '192.168.1.100', Protocol: SMTP, Server Response: '554 5.7.1 <nazrisms@gmail.com>: Relay access denied', Port: 25, Secure(SSL): No, Server Error: 554, Error Number: 0x800CCC79"

here is my postfix/main.cf file looks like

# See /usr/share/postfix/main.cf.dist for a commented, more complete version


# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

readme_directory = no

# TLS parameters
smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt
smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key
smtpd_use_tls = yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

myhostname = smssvr.smsdssb.com.my
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
#mydestination = smssvr.smsdssb.com.my, localhost.smsdssb.com.my, localhost.localdomain, localhost
relayhost = smtp-proxy.tm.net.my:587
mynetworks = 127.0.0.0/8
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
smtpd_sasl_local_domain =
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_client = yes
smtpd_sasl_authenticated_header = yes
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject _unauth_destination
smtpd_tls_auth_only = no
smtp_use_tls = yes
smtp_tls_note_starttls_offer = yes
smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom

virtual_maps = hash:/etc/postfix/virtusertable

mydestination = /etc/postfix/local-host-names

---- end of main.cf -----

so please someone help me with this.

as additional info, my windows mail server running the same smtp-relay with the same tcp port number works. i want to switch to linux.

thank you in advance.

I AM SORRY EVERYBODY, i forgot to mark on 'my server requires authentication' and also 'log on using Secure Pasword Authentication'. now everything works fine!