On Fri, 13 Mar 2015, Axb wrote:
On 03/13/2015 07:54 PM, John Hardin wrote:
On Fri, 13 Mar 2015, David B Funk wrote:
Except that the rrpproxy.net people have figured out a way to
cirumvent this.
They now register spammer domains and don't list -any- NS records in
the zone.
Is *that* a useful spam sign?
Remember, SA is not an RFC compliance validation tool. If a few legit
admins do that, and lots of spammers do it, then it's useful for
detecting spam.
Even if it's very tempting, it's not safe to use.
(been there - got bitten)
Your 'been there - got bitten', is that a reference to the temptation
or the actual case of no NS records?
Not listing NS records goes against DNS best-practices, I'm not
even sure how that kind of zone hosting works.
--
Dave Funk University of Iowa
<dbfunk (at) engineering.uiowa.edu> College of Engineering
319/335-5751 FAX: 319/384-0549 1256 Seamans Center
Sys_admin/Postmaster/cell_admin Iowa City, IA 52242-1527
#include <std_disclaimer.h>
Better is not better, 'standard' is better. B{
