Re: [Asrg] misconception in SPF

Daniel Feenberg <feenberg@nber.org> Fri, 07 December 2012 19:25 UTC

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Date: Fri, 07 Dec 2012 14:14:14 -0500
From: Daniel Feenberg <feenberg@nber.org>
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Subject: Re: [Asrg] misconception in SPF
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On Fri, 7 Dec 2012, SM wrote:

> Hi Paul,
> At 08:53 07-12-2012, Paul Smith wrote:
>> Yes, the MX is for receiving mail only, according to the SMTP standard, 
>> BUT if you work on the assumption that you have to be able to reply to 
>> the sender (which is a common
>
> Actually no, or else people would not be using noreply@example.

Anyone sending mail from noreply@example.com would not be seriously 
inconvenienced if they were required to have a working MTA at example.com, 
even if they wanted to use a non-working username at that domain. In fact, 
that is what I generally see in such mail.

daniel feenberg

>
> Regards,
> -sm 
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