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[SHAME] Spam Rats

Subject: [SHAME] Spam Rats
From: johnl at iecc.com (John Levine)
Date: 10 Jan 2013 20:57:25 -0000
In-reply-to: <[email protected]>

>*.4.4.3.0.5.a.0.0.8.b.d.0.1.0.0.2.ip6.arpa. PTR a.node.on.vlan344.namn.se.
>
>...will work just fine, for instance.

Since there is no AAAA record for a.node.on.vlan344.namn.se., this
won't work fine in any rDNS check I'm aware of.

You are aware that useful rDNS has to have matching forward DNs, right?

Follow-Ups:
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  - From: bonomi at mail.r-bonomi.com (Robert Bonomi)
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  - From: dot at dotat.at (Tony Finch)

References:
- [SHAME] Spam Rats
  - From: mansaxel at besserwisser.org (Måns Nilsson)

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