the problem that we have had when blocking things like this is that our
own clients get pissed off when they can't receive mail from servers
that are on DSL or cable connections.
Len Conrad wrote:
If
if if if ... Your whole point is built on a hypothetical, my policy
is built on conrete results.
Blocking subscriber networks by PTR domain works very well. No IFs.
your predatory SPAM blocking policies block those emails
"predatory" WTF?
Just who is getting "preyed" upon here?
My MX
Just who is permitting my MX to be preyed upon by infected PCs, by the
10's of 1000's of predatory attacks per day, for years and years?
The subscriber network operator who refuses, for economic reasons, to
police his networks, who refuses to block egress to port 25, whose
refusal to pay the cost of policing his networks is shifting the cost
of defense to my MX.
your customers are the ones who lose sales and end the end this will
reflect on you the service provider. This is true whether you are an
ISP providing mail to external customers or an IT staff providing email
service to internal users.
The blocking of subscriber networks by PTR shifts the costs back onto
those networks. It is now THEIR problem to cleanup their networks, it
is no longer my cost of defending myself from their unrelenting,
horrific attacks.
You can not change the way others choose to run their business
Absolutely false. Get your mailserver's IP blacklisted, and you will
very quickly react to get it unlisted.
but you
may have to adapt the way you look at things to allow your customers to
be happy with your service.
The cost of getting a legit server white-listed is pushed back onto
that legit server, which should address the reason of the blacklisting
problem with their access provider, NOT me and my MX. My MX is guilty
of absolutely nothing other than the lowest-cost self-defense.
You people are so blinded by the insane status quo, that you can't
think or see straight.
Obsessed with the a couple of sparse, healthy trees, you people
cannot, or will not, see the dense, huge forest of sick trees.
Len
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