spf-discuss
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Re: [spf-discuss] throwaway domains and whois

2008-10-20 20:09:26
On Mon, 20 Oct 2008, David MacQuigg wrote:

I think most senders will comply after seeing a large number of these

Use an SMTP reject, not a DSN.

I do.  Here is my current message for anonymous senders.  Yours sounds better.

550-5.7.1 You must have a valid HELO or publish SPF: http://www.openspf.org 
550-5.7.1 Contact your mail administrator IMMEDIATELY!  Your mail server is 
550-5.7.1 severely misconfigured.  It has no PTR record (dynamic PTR records 
550-5.7.1 that contain your IP don't count), an invalid or dynamic HELO, 
550 5.7.1 and no SPF record.

Some senders only see the first line.  I'm want to put an URL
in the first line with a web page to explain the problem fully.

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


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