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DNSLint, A command line DNS diagnosics tool

By Johan van Soest.

Published : 2017-05-09.

Last updated : 2017-05-11.

DNSLint is a Microsoft Windows command line utility by Tim Rains that helps you to diagnose common DNS name resolution issues. It is not available as a default application, but has to be downloaded and installed from the Microsoft support site.
This tool diagnoses configuration issues in DNS quickly, and can generate a report in HTML format regarding the status of the domain that you are testing. DNSLint is a free command-line utility. The syntax is:

dnslint /d domain_name | /ad [LDAP_IP_address] | /ql input_file [/c [smtp,pop,imap]] [/no_open] [/r report_name] [/t] [/test_tcp] [/s DNS_IP_address] [/v] [/y]

When the domain name is not registered with InterNic (.com and .net domains) the ip-address of the authoritative DNS server must be provided (/s option).

Example

The following box contains the DNSLint report for the query on the domain of vanSoest.it:

DNSLint Report

System Date: Sun Dec 27 12:23:42 2015

Command run:

dnslint /d vansoest.it /s 217.73.234.2

Domain name tested:

vansoest.it

The following 1 DNS servers were identified as authoritative for the domain:

DNS server: dns.alicom.com
IP Address: 217.73.234.2
UDP port 53 responding to queries: YES
TCP port 53 responding to queries: Not tested
Answering authoritatively for domain: Unknown

SOA record data from server:
Authoritative name server: ns.tuonome.it
Hostmaster: hostmaster.vansoest.it
Zone serial number: 1
Zone expires in: 4.00 day(s)
Refresh period: 86400 seconds
Retry delay: 7200 seconds
Default (minimum) TTL: 3600 seconds

Host (A) records for domain from server:
217.73.229.100

Mail Exchange (MX) records from server (preference/name/IP address):
10 mail.email-pro.eu 62.149.157.151

Notes:
One or more DNS servers may not be authoritative for the domain

Legend: warning, error

DNSLint developed by Tim Rains

System specifications

DNSLint runs on all Windows systems from Server 2000, Windows XP and newer.

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