[dmarc-discuss] A bit confused on the utility of a DNS record for DMARC external validation

Tim Draegen tim at eudaemon.net
Tue Feb 20 12:22:55 PST 2018


> On Feb 20, 2018, at 11:24 AM, DMARC via dmarc-discuss <dmarc-discuss at dmarc.org> wrote:
> QUESTION ONE: How is it possible for me to continue to receive aggregate reports from domains that have no DMARC external validation for the receiving domain ?

Some DMARC report generators do not check for the existence of the validation record. Call it a bug or a partial implementation.

> QUESTION TWO: Is it possible that some receiving MTA's will ignore the lack of  DMARC external validation and just send aggregate reports to any rua address ?

Yup! Entirely possible. According to question #1, you've probably seen this in the wild.

Hope this helps,
=- Tim


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