spf-discuss
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RE: txt SPF record with cname

2004-09-13 19:48:02
So, this is a major issue.

The "Current Protocol Specification" should make this clear that CNAME
should not be used.  But it gives an example that uses CNAME!

Guy

-----Original Message-----
From: owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
[mailto:owner-spf-discuss(_at_)v2(_dot_)listbox(_dot_)com] On Behalf Of Stuart 
D. Gathman
Sent: Monday, September 13, 2004 10:41 PM
To: spf-discuss(_at_)v2(_dot_)listbox(_dot_)com
Subject: Re: [spf-discuss] txt SPF record with cname

On Mon, 13 Sep 2004, guy wrote:

If I have these dns records:
watkins-home.com.             A       1.2.3.4
                              txt     "v=spf1 a -all"
www.watkins-home.com. CNAME   watkins-home.com.
                              txt     "v=spf1 -all"

The txt record for "www.watkins-home.com." gives an error.

I get an error similar to this in the messages file:
named[16521]: dns_master_load: master/watkins-home.com.db:4:
www.watkins-home.com: CNAME and other data

Is this a problem?  Can "www.watkins-home.com." be forged?

Yes.  You cannot mix CNAME with other records for a name.  This is
a DNS restriction.


Should I change the CNAME to A?

Yes.

-- 
              Stuart D. Gathman <stuart(_at_)bmsi(_dot_)com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flamis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

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