Postfix不需要validation本地电子邮件？

根据本教程，我有一个Postfix / Courier邮件服务器（通过SASL / MySQLvalidation）。 我目前在Debian 6上运行我的服务器，它是一个VPS。 它可以很好地工作，但我似乎无法validation入站电子邮件发送。 如果我从Outlook发送的电子邮件禁用SMTP身份validation，所有事情都会发生，而且我没有被拒绝，服务器上的日志告诉我：

Dec 19 09:39:33 new postfix/smtpd[20439]: connect from unknown[****] Dec 19 09:39:33 new postfix/smtpd[20439]: 7FF1E469840: client=unknown[****] Dec 19 09:39:33 new postfix/cleanup[20444]: 7FF1E469840: message-id=<000c01cefc31$41319a90$c394cfb0$@email@mydomain> Dec 19 09:39:33 new postfix/qmgr[20429]: 7FF1E469840: from=<email@mydomain>, size=2730, nrcpt=1 (queue active) Dec 19 09:39:33 new postfix/virtual[20445]: 7FF1E469840: to=<email@mydomain>, relay=virtual, delay=0.49, delays=0.4/0.08/0/0.01, dsn=2.0.0, status=sent (delivered to maildir) Dec 19 09:39:33 new postfix/qmgr[20429]: 7FF1E469840: removed Dec 19 09:39:36 new postfix/smtpd[20439]: disconnect from unknown[****] 

****表示电子邮件客户端的IP地址

但是，如果我尝试将电子邮件发送到外部域（例如Gmail地址），则电子邮件正如预期的那样被拒绝并反弹回来：

 Your message did not reach some or all of the intended recipients. Subject: Sent: 19/12/2013 9:49 am The following recipient(s) cannot be reached: '[email protected]' on 19/12/2013 9:49 am Server error: '554 5.7.1 <[email protected]>: Relay access denied' 

日志还会发出一些关于拒绝authentication的内容（这是可以预料的）

• Spf根据接收者地址通过或失败
• （Postfix + Dovecot）所有发送到@ aol.com的邮件都被延期
• 后缀发件人validation550
• 来自中继服务器的邮件失败了spf
• Postfixlogin不匹配的发件人地址被拒绝

 Dec 19 09:48:34 new postfix/smtpd[20449]: connect from unknown[****] Dec 19 09:48:34 new postfix/smtpd[20449]: NOQUEUE: reject: RCPT from unknown[****]: 554 5.7.1 <[email protected]>: Relay access denied; from=<email@mydomain> to=<[email protected]> proto=ESMTP helo=<MyPC> Dec 19 09:48:36 new postfix/smtpd[20449]: disconnect from unknown[****] 

如果我在我的电子邮件客户端（Outlook）上启用SMTP身份validation，一切都按预期工作。 实际上是否有一些authentication正在进行，我没有看到，或者是作为内部电子邮件的开放中继？ 如果是这种情况，我如何强制所有电子邮件的身份validation？

我的main.cf是：

 relayhost = mynetworks = 127.0.0.0/8 mailbox_size_limit = 0 recipient_delimiter = + inet_protocols = all broken_sasl_auth_clients = yes virtual_alias_domains = virtual_alias_maps = proxy:mysql:/etc/postfix/mysql-virtual_forwardings.cf, mysql:/etc/postfix/mysql-virtual_email2email.cf virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql-virtual_domains.cf virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailboxes.cf virtual_mailbox_base = /home/vmail virtual_uid_maps = static:5000 virtual_gid_maps = static:5000 smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination smtpd_use_tls = yes smtpd_tls_cert_file = /etc/postfix/smtpd.cert smtpd_tls_key_file = /etc/postfix/smtpd.key transport_maps = proxy:mysql:/etc/postfix/mysql-virtual_transports.cf virtual_create_maildirsize = yes virtual_maildir_extended = yes virtual_mailbox_limit_maps = proxy:mysql:/etc/postfix/mysql-virtual_mailbox_limit_maps.cf virtual_mailbox_limit_override = yes virtual_maildir_limit_message = "The user you are trying to reach is over quota." virtual_overquota_bounce = yes proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps 

 telnet ipaddress 25