| Hi guys, I have installed postfix and dovecot in my centos5.X system. I can send mail to the user in my group but can not send mail to any other domain When I want to send mail error occured,..Relay access denied What should I do to avoid SMTP Authentication? I just follow http://wiki.centos.org/HowTos/postfix here is my $>postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mydomain = kosoko.com myhostname = smtp.mydomain.com mynetworks = 111.9.0.0/24, 222.91.0.0/24, 127.0.0.0/8 myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES relay_domains = sample_directory = /usr/share/doc/postfix-2.3.3/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop smtpd_sender_restrictions = permit_mynetworks, reject_non_fqdn_sender, reject_unknown_sender_domain, permit unknown_local_recipient_reject_code = 450 Here is my master.cf record for smtp: # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # ========================================================================== smtp inet n - n - - smtpd Please help me. Amin |