On 1 Nov 2016, at 16:11, Andre Rodier wrote:
Hello all!
I have set up my postfix server, and my DNS entries to support DKIM,
SPF and DMARC. However, I think I may have an error somewhere, because
the "Authentication-Results:" header for DMARC -s "fail":
Does anyone knows why, please?
Not likely. There's not enough in your query to figure out an answer and
this isn't the best place to ask.
You are more likely to get a useful answer from a forum where DMARC is a
core topic. Asking an arguably off-topic question here repeatedly does
little to improve the chance of getting a substantive answer.
I have send an email to an online DMARC test, and did not receive any
warning.
However, here what I have with three providers:
[...]
Thanks for your advices.
2 clues:
1. Find a suitable place to ask this. This is the Postfix Users list.
There is no direct DMARC support in Postfix, so you probably should find
where, if anywhere, users of your signing tool discuss its use.
2. When you ask about why a cryptographic signing mechanism is not
verifying, it is critical to include more than just the summary of
results stating that verification failed. No one can tell you why it
failed without seeing the unmodified message with its signature,
headers, and body intact.
