> On Jan 15, 2016, at 10:07 AM, Franck Martin <[email protected]> wrote:
> 
> I see a few problems in your DNS, you may consider to have it fixed.
> 
> http://dnsviz.net/d/mikea.ath.cx/dnssec/


Also, an MX record is a good sign that you're using the domain for
mail intentionally.

Cheers,
  Steve


> 
> On Fri, Jan 15, 2016 at 9:01 AM, mikea <[email protected]> wrote:
> Apologies if this needs to go elsewhere; pointers, if appropriate, will be
> welcome.
> 
> When I try to mail a spoof report about my home system, mikea.ath.cx, I get
> back "could not send" and "returned mail" notices:
> 
> > The original message was received at Mon, 4 Jan 2016 10:16:36 -0600 (CST)
> > from localhost [127.0.0.1]
> >
> >    ----- The following addresses had permanent fatal errors -----
> > <[email protected]>
> >     (reason: 451 #4.1.8 Domain of sender address <[email protected]> does 
> > not resolve)
> >
> >    ----- Transcript of session follows -----
> > ... while talking to mx2.paypalcorp.com.:
> > >>> MAIL From:<[email protected]> SIZE=15200
> > <<< 451 #4.1.8 Domain of sender address <[email protected]> does not 
> > resolve
> > ... while talking to mx1.paypalcorp.com.:
> > >>> MAIL From:<[email protected]> SIZE=15200
> > <<< 451 #4.1.8 Domain of sender address <[email protected]> does not 
> > resolve
> > <[email protected]>... Deferred: 451 #4.1.8 Domain of sender address 
> > <[email protected]> does not resolve
> > Message could not be delivered for 5 days
> > Message will be deleted from queue
> 
> Paypal has no problem sending mail to *me*, which implies that at least some
> set of their nameservers can resolve mikea.ath.cx just fine. It's just that
> the nameservers they use on their inbound mailserver(s)
> 
> (mx[12].paypalcorp.com)
> 
> don't resolve mikea.ath.cx at all. The nameservers associated with
> paypal.com, as shown in `dig paypal.com`, are a totally disjoint set
> 
> (ns[1234].p57.dynect.net)
> 
> which *do* resolve mikea.ath.cx, again as shown by
> `dig mikea.ath.cx @ns[1234].p57.dynect.net`.
> 
> Does anyone have a handle on how to get in touch with someone who can get this
> fixed? It's to paypal's benefit, as it is spoof reports that they've said they
> want to get. Moreover, if it's happening to me, it probably is happening to
> other people.
> 
> --
> Mike Andrews, W5EGO
> [email protected]
> Tired old sysadmin
> 
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