nanog mailing list archives
Re: NANOG list reverse DNS handling
From: Daniel Roesen <dr () cluenet de>
Date: Sat, 3 Apr 2004 23:52:21 +0200
On Sat, Apr 03, 2004 at 02:02:54PM -0700, Mike Lewinski wrote:
Note that this doesn't work if the resolver has an ACL applied that restricts who can do resolution on it and you don't fall within that ACL.
This is the case, sadly. I wanted to propose your method too. :-)
But the bigger hurdle here is really figuring out what the resolver mail.merit.edu uses, since it's most likely open.
Not a big hurdle. Run tcpdumps on the auth servers of a domain from which you do a test connect to mail.merit.edu. Of course, this machine shouldn't be in their cache already. You'll find out that mail.merit.edu runs a local DNS cache and that it refuses any queries from outside. Best regards, Daniel
Current thread:
- NANOG list reverse DNS handling Iljitsch van Beijnum (Apr 03)
- Re: NANOG list reverse DNS handling Mike Lewinski (Apr 03)
- Re: NANOG list reverse DNS handling Daniel Roesen (Apr 03)
- Re: NANOG list reverse DNS handling Mike Lewinski (Apr 03)