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Re: ATTBI refuses to do reverse DNS?

  • From: Jared Mauch
  • Date: Tue Jun 18 21:18:53 2002

	And it will continue to work that way.

	That is the quality work of the people who spend many
man-hours putting together such a system that is robust enough
that when i decide that when you send me e-mail (not via a list)
from a host that has no reverse dns, i can easily flag that for
further scrutiny.

	What you are missing here is that, while yes, you can
send e-mail from root@[1.2.3.4] to people, they may say "hmm, e-mail
from an ip address is not typical of the people that i communicate
with", and therefore treat it differntly.  just like policy-routing
but for your mailbox.

	it is a good reflection of provider clue(tm).  even if they
have rev-192.168.0.1.example.com. as their reverse dns, it's slightly
more responsible (imho) than nothing/nxdomain.

	- jared

On Tue, Jun 18, 2002 at 05:48:29PM -0700, Patrick Thomas wrote:
> 
> Hi - what if I don't _want_ a domain name ?  Last time I checked all of
> the standard Internet protocols worked just fine with just an IP - thank
> you for imposing your own sense of expediency and "convenience" on me and
> then arbitrarily breaking the network for me when I choose not to
> participate.
> 
> --PT
> 
> On Tue, 18 Jun 2002, Jared Mauch wrote:
> 
> >
> > On Tue, Jun 18, 2002 at 04:54:54PM -0500, Stephen Sprunk wrote:
> > >
> > > Thus spake "Stephen Griffin" <stephen.griffin@rcn.com>
> > > > The lack of clue tends to be on the providing in-addr side of
> > > > things.  I think it is a great thing to refuse connections from
> > > > ips without in-addr, in the same way it is great to refuse mail
> > > > from domains that don't provide postmaster addresses.
> > >
> > > On first reading, I thought that was sarcasm.  Now I realize you're serious.
> >
> > 	I've found that filtering out mail from
> > people that have no reverse dns tends to typically point to
> > a) open-relays, b) spam, c) lack of working abuse/postmaster.
> >
> > > > It is a means through which one can influence the laziness of
> > > > others.  Simply disregarding what others do, only legitimizes
> > > > the laziness, and continues us along the road of everyone
> > > > doing the absolute minimum.
> > > > ...
> > > > You neglect to include the option of the customer changing
> > > > to an ISP that provides in-addr.
> > >
> > > So, if you ran Amazon.com, you wouldn't accept money from customers of clueless
> > > ISPs?
> >
> > 	You can't do it on the store side, but you can do it on the
> > residental customer side, or at least give those messages a higher
> > level of attention in any overall spam score for a message.
> >
> > > Sadly, even that level of coercion wouldn't be anywhere near enough to motivate
> > > most ISPs.  And your (non-)customers will be caught in the crossfire.
> >
> > 	Anyone that sends e-mail to me from a host/server with no reverse
> > dns I will not see.  It is not rejected w/ 400/500 series code
> > as I know some people do.  it goes to it's own 'spam' folder.
> >
> > 	I have found that some companies (american express) for
> > example can not seem to make their systems have reverse dns, and
> > they suffer from the lack of a working postmaster/hostmaster
> > address too.
> >
> > 	It just means i read that folder once every few days and
> > periodically send e-mail to people i know that have hit the filter
> > or other legit folks.
> >
> > 	- jared
> >
> > --
> > Jared Mauch  | pgp key available via finger from jared@puck.nether.net
> > clue++;      | http://puck.nether.net/~jared/  My statements are only mine.
> >
> 

-- 
Jared Mauch  | pgp key available via finger from jared@puck.nether.net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.




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