maybe a newbie question - stop sending mail from <> - how can i do?

From: Noze SrL (no email)
Date: Mon Jul 01 2002 - 04:38:49 EDT


Hi all, hi have a problem with postfix installed on a server, wich this is postconf -n:

mail_version = Postfix-20010228-pl08

alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
bounce_size_limit = 15000
command_directory = /usr/sbin
command_time_limit = 600s
daemon_directory = /usr/lib/postfix
debug_peer_level = 5
default_privs = nobody
delay_warning_time = 12h
inet_interfaces = all
mail_owner = postfix
mail_spool_directory = /var/spool/mail
mailbox_size_limit = 21200000
maps_rbl_domains = spamhaus.relays.osirusoft.com, spamsites.relays.osirusoft.com
message_size_limit = 10440000
mydestination = $myhostname, localhost.$mydomain, $mydomain, mail.$mydomain
mynetworks = 213.92.22.xxx/xx, 127.0.0.1
mynetworks_style = subnet
notify_classes = resource, software, policy, protocol
queue_directory = /var/spool/postfix
recipient_delimiter = +
smtp_connect_timeout = 300s
smtpd_banner = ESMTP mailserver
smtpd_client_restrictions = reject_maps_rbl , hash:/etc/postfix/access
smtpd_error_sleep_time = 2s
smtpd_etrn_restrictions = reject_maps_rbl
smtpd_hard_error_limit = 10
smtpd_helo_restrictions = reject_maps_rbl
smtpd_sender_restrictions = reject_maps_rbl
smtpd_soft_error_limit = 5
virtual_maps = hash:/etc/postfix/virtual

How can i stop sending mail from "<>" , wich allow anyone to use as open relay my server?
I have missed some important config? Here's detail of mail sent using my server as open relay.

Thank you in advance. Loris

220 ESMTP mailserver
ehlo ciao
250-PIPELINING
250-SIZE 10440000
250-ETRN
250-STARTTLS
250 8BITMIME
mail from: <>
250 Ok
rcpt to:
250 Ok
data
354 End data with <CR><LF>.<CR><LF>
Subject: pippo

ciao
.
250 Ok: queued as DC78F9BB31

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