关于DNS的问题

43631466

今天早上发现邮件服务器不正常，用邮件服务器往163发邮件，能正常收到，用163往邮件服务器发邮件出现退信，内容如下：
This message is generated by COREMAIL email system.
I'm sorry to have to inform you that the message returned


你发送到？？？@？？？.com.cn的邮件由于以下原因被退回 : [email=black@？？？.com.cn]？？？@？？？.com.cn[/email] DNS query error: ？？？.com.cn

以前都正常的，是否是申请域名的服务供应商那里出了问题？？


补充下，我telnet   邮件服务器IP地址   25和110端口都成功的，没有问题

[ 本帖最后由 43631466 于 2007-5-23 09:54 编辑 ]

砸锅卖铁

www.dnsstuff.com查询你的MX记录是否正常

43631466

Searching for ？？？.com.cn MX record at h.root-servers.net Got referral to a.dns.cn. [took 46 ms]
Searching for ？？？.com.cn MX record at a.dns.cn. Reports no MX records (NXDOMAIN). 449ms.

Sorry, I could not continue.

麻烦楼上的斑竹再帮我看下，上面的查询结果是什么意思

tdk

www.dnsstuff.com 再去dnsreport一下看看

43631466

dnsreport的结果

[ERROR: The parent servers say that the domain ？？？.com.cn does not exist. Note that the DNS Report only works on domains, not hostnames.]

undefine

叫你只用域名，不要加主机名称，去重新report一下。

43631466

有错误提示
MX的

FAIL

MX is host name, not IP

ERROR: You have one or more MX record(s) that contain an IP address. This is not valid. A fully RFC-compliant mailserver will not be able to send you mail (although some mail servers will, due to the TCP/IP functions that they use). The problem MX records are: 11.22.33.44.

FAIL

Reverse DNS entries for MX records

ERROR: None of your mail server(s) seem to have reverse DNS (PTR) entries (I didn't get any responses for them). RFC1912 2.1 says you should have a reverse DNS for all your mail servers. It is strongly urged that you have them, as many mailservers will not accept mail from mailservers with no reverse DNS entry. You can double-check using the 'Reverse DNS Lookup' tool at the DNSstuff site (it contacts your servers in real time; the reverse DNS lookups in the DNS report use our local caching DNS server).

MAIL的

FAIL

Connect to mail servers

ERROR: I could not complete a connection to any of your mailservers! 11.22.33.44: Could not connect without glue or A record. If this is a timeout problem, note that the DNS report only waits about 40 seconds for responses, so your mail *may* work fine in this case but you will need to use testing tools specifically designed for such situations to be certain.

[ 本帖最后由 43631466 于 2007-5-23 11:12 编辑 ]

tdk

域名解析都没了????
那。。。。。。。。。。

undefine

你自己做dns解析吗？还是有服务商？你是不是没续费？哈哈哈

43631466

域名没过期，域名解析是服务供应商那里做的，我想确认下是不是服务供应商那里出了问题