Re: Missing SPF/MX record

[Tom Conder <blitz@gazpacho.net>]

SPF is Sender Policy Framework. It checks the domain of the sender
against DNS MX record to validate whether the email is "spoofed".
Unfortunately, I too have been victim to this well-meaning yet brain
damaged scheme. Here is a web page with coherent objections to SPF:
http://www.advogato.org/article/816.html

Tom

On Wed, 2005-02-09 at 19:22 -0600, L. V. Lammert wrote:
> On Wed, 9 Feb 2005, Robert Threet wrote:
> 
> > I was informed by someone trying to send mail to a Polish site that our mail would reject because
> > we have a Missing SPF/MX record.  Has anybody heard of this?  I see a lot of hits on Google mostly
> > people complaining about trying to send mail to Poland.
> >
> What is the domain name for your mail server? If there's a problem, you
> can verify by checking the MX record (dig MX), .. you might also want to
> verify that your reverse DNS is configured properly (dig -x ).
> 
> > =====
> > Robert
> > http://linux.usi.edu/rat/
> >
> If it's usi.edu, you have the following MX records defined:
> 
> ;; ANSWER SECTION:
> usi.edu.                86400   IN      MX      3 ninja.usi.edu.
> usi.edu.                86400   IN      MX      3 ninja2.usi.edu.
> usi.edu.                86400   IN      MX      30 adams.ind.net.
> usi.edu.                86400   IN      MX      30 washington.ind.net.
> 
> ninja is OK:
> ninja.usi.edu.          86344   IN      A       192.206.10.123
> 
> also reverse:
> 123.10.206.192.in-addr.arpa. 86400 IN   PTR     ninja.usi.edu.
> 
> ninja2.usi.edu.         86291   IN      A       192.206.10.124
> 124.10.206.192.in-addr.arpa. 86400 IN   PTR     ninja2.usi.edu.
> 
> adams.ind.net.          21912   IN      A       157.91.1.9
> 9.1.91.157.in-addr.arpa. 604800 IN      PTR     adams.ind.net.
> 
> washington.ind.net.     21879   IN      A       157.91.1.1
> 1.1.91.157.in-addr.arpa. 604800 IN      PTR     washington.ind.net.
> 
> usi.edu seems to check out.
> 
> 	Lee
> 
> ================================================
>   Leland V. Lammert            lvl@omnitec.net
>     Chief Scientist     Omnitec Corporation
>  Network/Internet Consultants   www.omnitec.net
> ================================================
> 
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