North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: NANOG list reverse DNS handling
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
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