Reverse domain name resolution check command

If you are doing a mail server yourself, you need to do reverse domain name resolution in general. You can let the IP provider do it.

Domain Name Reverse Resolution View Command

To see if the reverse resolution is successful, you can use the following command: nslookup –qt=ptr yourIP, you can see the reverse resolution from the returned information. result.

nslookup –qt=ptr yourIP

For example, my domain name is diyway.net

My mail server address is: mail.kerry.net

The format of the mailbox user name is [email protected]

The HELO setting the mail system on the mail server is: mx.kerry.net

The mail server IP is: 59.166.155.111

Find local telecommunications to do 59.166.155.111 IP anti-parsing to mx.kerry.net

On Windows systems, enter cmd under the run command and enter nslookup –qt=ptr 59.166 in the open window .155.111

The returned information is as follows:

C:\\Documents and Settings\\user>nslookup –qt=ptr 59.166.155.111

Server: mx.kerry.net< Br>

Address: 59.166.155.111

Explain that the reverse resolution of this IP is successful.

Return information as follows

C:\\Documents and Settings\\user>nslookup –qt=ptr 59.166.155.111

*** Can't find server name for address 59.166.155.1: Non-existent domain

Server: UnKnown

Address: 59.166.155.111

Description The reverse resolution of this IP is not done.