退信内容

lipton100

Subject: Mail delivery failed: returning message to sender

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

xxx.xx@xxx.com
It appears that the DNS operator for xxx.com
has installed an invalid MX record with an IP address
instead of a domain name on the right hand side.

很奇怪,香港的一家公司发给我公司会产生退信,内容为以上描述,但其他域名发我公司正常,我公司的域名和mx记录是在xinnet上做的,联系过他们,说是没问题,实在搞不懂!望高手解决,谢谢!

wxhsh

退信说是因为MX记录用的是IP而非域（别）名，修改下MX记录用别名替换IP地址就行了。

lipton100

^_^,感谢你帮忙,问题解决了!