Cd Chen's Services

1.mail server如果設定成功,例如轉出去信件,一般人使用的ISP都是浮動IP,應該會被正常有註冊SMTP如: GMAIL/YAHOO/PCHOME 拒絕訊息:(這樣是正確拒收訊息?)

郵件被退回錯誤訊息:
Message 24:
From MAILER-DAEMON@server1.example.com Sat May 31 12:56:23 2008
Date: Sat, 31 May 2008 12:56:23 +0800
From: Mail Delivery Subsystem
To:root@server1.example.com
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
boundary="m4V4uN1p005499.1212209783/server1.example.com"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)

This is a MIME-encapsulated message

--m4V4uN1p005499.1212209783/server1.example.com

The original message was received at Sat, 31 May 2008 12:56:16 +0800
from localhost.localdomain [127.0.0.1]
----- The following addresses had permanent fatal errors -----

(reason: 550-5.7.1 [218.171.173.114] The IP you're using to send mail is not
authorized)
<<< 550-5.7.1 to send email directly to our servers. Please use the SMTP
<<< 550-5.7.1 relay at your service provider instead. Learn more at
<<< 550 5.7.1 http://mail.google.com/support/bin/answer.py?answer=10336 28si1162
156wfg.15
554 5.0.0 Service unavailable
--m4V4uN1p005499.1212209783/server1.example.com
Content-Type: message/delivery-status

Reporting-MTA: dns; server1.example.com
Received-From-MTA: DNS; localhost.localdomain
Arrival-Date: Sat, 31 May 2008 12:56:16 +0800
Final-Recipient: RFC822; skuanggg@gmail.com
Action: failed
Status: 5.7.1
Remote-MTA: DNS; gmail-smtp-in.l.google.com
Diagnostic-Code: SMTP; 550-5.7.1 [218.171.173.114] The IP you're using to send m
ail is not authorized
Last-Attempt-Date: Sat, 31 May 2008 12:56:23 +0800
--m4V4uN1p005499.1212209783/server1.example.com
Content-Type: message/rfc822

Return-Path:
Received: from server1.example.com (localhost.localdomain [127.0.0.1])
by server1.example.com (8.13.8/8.13.8) with ESMTP id m4V4uG1p005497
for ; Sat, 31 May 2008 12:56:16 +0800
Received: (from root@localhost)
by server1.example.com (8.13.8/8.13.8/Submit) id m4V4uG5I005496
for ; Sat, 31 May 2008 12:56:16 +0800
Date: Sat, 31 May 2008 12:56:16 +0800
From: root
Message-Id: <200805310456.m4V4uG5I005496@server1.example.com>
To: skuanggg@gmail.com
Subject: ghs

afewfergrgeg
dfdsgr
--m4V4uN1p005499.1212209783/server1.example.com--

以下是/var/log/maillog:

May 31 12:56:16 server1 sendmail[5496]: m4V4uG5I005496: from=root, size=57, class=0, nrcpts=1, msgid=<200805310456.m4V4uG5I005496@server1.example.com>, relay=root@localhost
May 31 12:56:16 server1 sendmail[5497]: m4V4uG1p005497: from=, size=349, class=0, nrcpts=1, msgid=<200805310456.m4V4uG5I005496@server1.example.com>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1]

May 31 12:56:16 server1 sendmail[5496]: m4V4uG5I005496: to=skuanggg@gmail.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30057, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (m4V4uG1p005497 Message accepted for delivery)
May 31 12:56:23 server1 sendmail[5499]: m4V4uG1p005497: to=, ctladdr= (0/0), delay=00:00:07, xdelay=00:00:07, mailer=esmtp, pri=120349, relay=gmail-smtp-in.l.google.com. [209.85.201.27], dsn=5.0.0, stat=Service unavailable
May 31 12:56:23 server1 sendmail[5499]: m4V4uG1p005497: m4V4uN1p005499: DSN: Service unavailable
May 31 12:56:23 server1 sendmail[5499]: m4V4uN1p005499: to=, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31598, dsn=2.0.0, stat=Sent

2.
[MTA1(發送郵件主機) ＝＝>MTA2(轉送郵件主機)==> MTA3(目的接收主機)]

想請問mail這指令,只能使用本身的電腦的mta(sendmail)傳送?mail指令在本機上執行後,然後別台電腦上mta2(sendmail)就能傳送->mta3?mail指令應該是只能在該主機呼叫mta？