Blackhole DNS servers.....

[schemamasta]

Greetings all,

Could anyone recommend a good source for a realtime blackhole DNS server? I am looking into spam blocking solutions for my network and am inclined to go this route. Software solutions seem to be limited in their function. I did a search on this issue and came up with many servers, any suggestions?

Thanks in advance,
Mark

 

[wbg34]

http://www.declude.com/junkmail/support/ip4r.htm

 

[Maxim72]

What exactly is a Blackhole DNS server?

 

[schemamasta]

A Blackhole DNS server is a name server that is used to identify spam senders. It keeps a list of known spammer domains, and host names too I imagine. When an email comes in, it's supposed to check it against it's information to see if it comes from a known spam source. You use name servers on your network every time you type something like

http://www.google.com

and it resolves it to IP.

 

[Maxim72]

So you use software of some kind? Right now I'm running Redhat for my external DNS and Win2k for internal...Which side would it go on?

 

[schemamasta]

If I understand correctly, you have to configure your mail server to perform a reverse lookup query on one of those servers. The URL a couple of posts up lists many of these servers, some are free to use, some are not. I was looking for advice on which to pick.