Reverse DNS: Is it necessary?

Arwen Evenstar mexrap at
Sun Mar 18 14:02:00 UTC 2001

Nicolai Langeldt in his DNS HOWTO, states that:
"Some people will tell you that reverse lookup mappings are only important 
for servers, or not important at all. Not so: Many ftp, news, IRC even some 
http (WWW) servers will not accept connections from machines of which they 
are not able to find the name. So reverse mappings for machines are in fact 

>From: "Studio 51" <leekembel at>
>To: comp-protocols-dns-bind at
>Subject: Reverse DNS: Is it necessary?
>Date: Sat, 17 Mar 2001 21:04:28 GMT
>I asked my web host to fix the lack of reverse DNS for the domains they 
>for me, they told me that thier nameservers don't support reverse DNS. Is
>this considered a misconfiguration? It's a dedicated host that will be
>running a spider program, so I would think that many hosts would try to
>perform a reverse DNS lookup on the spider, which will fail because of 
>Are there any other areas this is likely to affect?
>I thought reverse DNS was a standard part of properly setting up a
>nameserver, am I wrong?

Get Your Private, Free E-mail from MSN Hotmail at

More information about the bind-users mailing list