Diagnostic-Code: SMTP; 是什么意思？第573章 是什么意思？

Question

我正在使用 sendmail 从 Rails 应用程序发送邮件。但是，向特定用户域发送邮件时似乎发生了错误。 /var/mail/*** 的错误如下：

Date: Tue, 11 Oct 2011 16:33:46 GMT
From: Mail Delivery Subsystem <MAILER-DAEMON@*****>
Message-Id: <201110111633.p9BGXkpR010310@******>
To: <****@*****>
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
        boundary="p9BGXkpR010310.1318350826/******"
Subject: Returned mail: see transcript for details
Auto-Submitted: auto-generated (failure)
This is a MIME-encapsulated message

--p9BGXkpR010310.1318350826/*******

The original message was received at Tue, 11 Oct 2011 16:33:42 GMT
from localhost [127.0.0.1]

   ----- The following addresses had permanent fatal errors -----
<****@{domain}.com>
    (reason: 573 ********@****** failed to route the address)
<*****@{domain}.com>
    (reason: 573 *******@****** failed to route the address)
<*****@{domain}.com>
    (reason: 573 *******@******* failed to route the address)

   ----- Transcript of session follows -----
... while talking to *********.com.1.0001.arsmtp.com.:
>>> MAIL From:<*******@*******> SIZE=1273
<<< 573 ********@********* failed to route the address
554 5.0.0 Service unavailable

--p9BGXkpR010310.1318350826/*******
Content-Type: message/delivery-status

Reporting-MTA: dns; StreetSense
Received-From-MTA: DNS; localhost
Arrival-Date: Tue, 11 Oct 2011 16:33:42 GMT

Final-Recipient: RFC822; ****@*******.com
Action: failed
Status: 5.0.0
Diagnostic-Code: SMTP; 573 *******@******* failed to route the address
Last-Attempt-Date: Tue, 11 Oct 2011 16:33:46 GMT

Final-Recipient: RFC822; *******@********.com
Action: failed
Status: 5.0.0
Diagnostic-Code: SMTP; 573 *******@******** failed to route the address
Last-Attempt-Date: Tue, 11 Oct 2011 16:33:46 GMT

Final-Recipient: RFC822; ******@*********.com
Action: failed
Status: 5.0.0
Diagnostic-Code: SMTP; 573 *****@******** failed to route the address
Last-Attempt-Date: Tue, 11 Oct 2011 16:33:46 GMT

退回的邮件全部来自同一个域，并且邮件正在成功发送到其他域。当我查找 SMTP 573 诊断代码时，我收到此“573 内部服务器错误，IP 地址相关。”。但我不知道这意味着什么。谁能帮助我吗？

更新

从@guenter的回答中，我得到了这些命令，我​​运行它并得到以下输出：

# dig streetsense.com MX

; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> xxxxx.com MX
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61139
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:
;xxxxx.com.     IN  MX

;; ANSWER SECTION:
xxxxx.com.  3600    IN  MX  10 xxxxx.com.1.0001.arsmtp.com.
xxxxxx.com. 3600    IN  MX  20 xxxxx.com.2.0001.arsmtp.com.

;; AUTHORITY SECTION:
xxxxx.com.  155394  IN  NS  ns04.ntiva.net.
xxxxx.com.  155394  IN  NS  ns01.ntiva.net.
xxxxx.com.  155394  IN  NS  ns02.ntiva.net.
xxxxx.com.  155394  IN  NS  ns03.ntiva.net.

;; ADDITIONAL SECTION:
ns01.ntiva.net.     147 IN  A   xxx.xx.xx.xxx
ns02.ntiva.net.     147 IN  A   xxx.xx.xx.xxx
ns03.ntiva.net.     147 IN  A   xxx.xx.xx.xxx
ns04.ntiva.net.     147 IN  A   xxx.xx.xx.xxx

;; Query time: 45 msec
;; SERVER: xxx.xxx.x.x#xx(xxx.xxx.x.x)
;; WHEN: Tue Oct 11 18:08:23 2011
;; MSG SIZE  rcvd: 262

ping 似乎也正常工作：

# ping xxxxxxx.com
PING xxxxxxxx.com (xxx.xx.xx.xx) xx(xx) bytes of data.
64 bytes from linux06.ntiva.com (xxx.xx.xx.xx): icmp_seq=1 ttl=53 time=29.0 ms
64 bytes from linux06.ntiva.com (xxx.xx.xx.xx): icmp_seq=2 ttl=53 time=27.4 ms
64 bytes from linux06.ntiva.com (xxx.xx.xx.xx): icmp_seq=3 ttl=53 time=27.4 ms
64 bytes from linux06.ntiva.com (xxx.xx.xx.xx): icmp_seq=4 ttl=53 time=27.4 ms

编辑

我的服务器的主机名似乎也与引起问题的域名相同

# hostname
xxxxxxx

这与域名 xxxxxxx.com 相同。这会导致问题吗？

Answer 1

无法路由地址是这里的关键。

您的 sendmail 似乎不知道如何路由该地址。您需要在这里进行一些邮件调试。第一步可能是检查 DNS 中该域的 MX 记录 - dig example.com MX。

如果没有 MX 记录，那就是问题所在。如果存在 MX 记录，您可以尝试 ping 该主机。