[dmarc-discuss] What is the DMARC reject SMTP text?

Michiel van de Vis m.vandevis at acervus.nl
Wed Jun 6 23:27:47 PDT 2012

I believe it can be very useful for SMTP admins to receive a clear response
which states the problem and preferably a link to more information.

So I would prefer a combination of the 126.com / scanmailx.com responses.

Futhermore I think the response should at least contain DMARC. This might
also help to 'spread the word' to SMTP admins who analyse their logs.


2012/6/7 Murray S. Kucherawy <superuser at gmail.com>

> On Wed, Jun 6, 2012 at 6:40 PM, pandalove <pandalove at 126.com> wrote:
>> And in NetEase we use:
>> "550 MI:DMA $HostID, $TransID $now $Helplink\r\n"
>> As an example:
>>  "550 MI:DMA mx1, M8CowEAJvEn_fs9P4xSCAA--.1493S3 1338998527
>> http://mail.163.com/help/help_spam_16.htm?ip=\r\n
>> "
> Is this something people think we should be standardizing?  It's pretty
> uncommon (read: I haven't seen it) to rely on specific content in the text
> part of an SMTP reply.  It might be interesting to compare, but I think I'm
> a bit itchy about the idea of requiring something specific in there.
> -MSK
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