Encountering the message Non-Authoritative Answer

Posted on 2009-07-09
Medium Priority
Last Modified: 2012-05-07

I am encountering an issue with SMTP on a MS Windows Server 2003 R2 Enterprise Edition server where some of the emails remain stuck in the c:\inetpub\mailroot\queue directory.

When I issue the nslookup command for on one of the domain names that's experiencing this problem from the command line I get the following results:
C:\>nslookup gmail.com
Server:  dns-rs1
Non-authoritative answer:
Name:    gmail.com

I issued the same command for my domain name and received a similar result:
C:\>nslookup positivecoach.org
Server:  dns-rs1
Non-authoritative answer:
Name:    positivecoach.org

Can someone explain to me what Non-authoritative answer means?

Thank you in advance for your help.


1 Comment
LVL 11

Accepted Solution

Abhay Pujari earned 200 total points
ID: 24820522
An Authoritative answer would only come an NS which has been configured to be incharge of the domain, while a non Authoritative answer would come from the rest of the NSs in the world. an answer that they recieved after asking somebody else or using their cache and are forwarding it to you, not an answer that they are responsible for.
Its basicly the NS telling you "hey, im not incharge of this domain so the information im giving you is second hand... if anything is wrong, dont shoot the delivery boy"

Authorative means the name server knows about a domain and it's configured to server it.

Non-Authorative means the name server is not yet configure / needs more time to serve the domain.

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