spf-discuss
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Re: Re: DNS load research

2005-03-20 22:38:28
Frank Ellermann wrote:
Heh, "my" policy is fine, the one redirect= is only the side-
effect of some zone-cut and wildcard confusion.  You could of
course argue that a copy instead of a plain redirect is cheaper
for recipients.  OTOH the redirect= indicates that it's not
really "my" sender policy, it's only a wildcard vanity host.

You're joking, right?

Let me quote the following facts, and please feel free to comment:

Received: from portent.listbox.com (portent.listbox.com [208.58.1.195])
        by sun.ohmi.org (8.13.1/8.13.1) with ESMTP id j2L4cOfm029821
        for <radu(_dot_)spf(_at_)ohmi(_dot_)org>; Sun, 20 Mar 2005 23:38:24 
-0500
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        by portent.listbox.com (Postfix) with ESMTP id 900429ECE9
        for <radu(_dot_)spf(_at_)ohmi(_dot_)org>; Sun, 20 Mar 2005 23:38:24 
-0500 (EST)
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        for <spf-discuss(_at_)v2(_dot_)listbox(_dot_)com>; Sun, 20 Mar 2005 
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05:35:59 +0100
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05:35:59 +0100
X-Injected-Via-Gmane: http://gmane.org/
To: spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
From: Frank Ellermann <nobody(_at_)xyzzy(_dot_)claranet(_dot_)de>


SPF(_at_)xyzzy(_dot_)claranet(_dot_)de: "v=spf1 redirect=claranet.de"
SPF(_at_)claranet(_dot_)de: "v=spf1 ip4:212.82.225.0/24 ip4:195.170.96.0/24 
-all"
ciao.gmane.org : 80.91.229.2

So your mail only gets through because apex.listbox.com does not check SPF. I wonder if the inventor of SPF finds the DNS load too expensive ? Hahaha. Yes, it could also be because SPF without SRS does not work too well. I wonder how much more DNS load SRS will add?

Also this means you are living proof that Andy Bakun was right when he said:

   "Many many many people want(ed) to setup SPF and forget it.
   Are those simple records accurate?"


But you're only missing "include:gmane.org", which should be 1 query in the optimized version, or 4 queries in the current version. Even so your total would still only be 6 even if gmane does not reduce their record.

Radu.


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