I setup postfix as
command_directory = /usr/local/sbin
config_directory = /usr/local/etc/postfix
daemon_directory = /usr/local/libexec/postfix
data_directory = /var/db/postfix
debug_peer_level = 2
html_directory = /usr/local/share/doc/postfix
inet_interfaces = all
mail_owner = postfix
mailq_path = /usr/local/bin/mailq
manpage_directory = /usr/local/man
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,
mydomain = abc.com.au
myhostname = cdb.au
myorigin = $mydomain
newaliases_path = /usr/local/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = /usr/local/share/doc/postfix
sample_directory = /usr/local/etc/postfix
sendmail_path = /usr/local/sbin/sendmail
setgid_group = maildrop
unknown_local_recipient_reject_code = 550
Then , i add user to system. When sent mail on microsoft outlook,I get error THis is log in /var/log/maillog.
hostname aaaaa verification failed: hostname nor servname provided, or not known Nov 1 16:59:47 cdb postfix/smtpd[14405]: connect from unknown[193.99.3.223]
postconf -nand relevant mail logs, at minimum showing the path of an entire message through the postfix system. – adaptr Nov 1 '11 at 12:04