On 2/15/2026 10:24 AM, lejeczek via Postfix-users wrote:
I won't ask is that possible - though certainly it made me frown - > because
it's happening.
Everywhere - so far - I emailed, including usual suspects, eg.: gmail, > yahoo,
etc. I got _pass_
Now I get bounces - only from this one place/destination - saying:
On 17.02.26 12:49, Matthew M. via Postfix-users wrote:
You would need to provide the full headers of the email, since DMARC is a
multistep process, including SPF validation.
DMARC also will fail if the mail is forwarded.
If DKIM is used, DMARC usually won't fail when forwarded.
it may fail, if headers are modified when forwarding.
Suggestion:
Post your headers into a ChatGPT session, ask it for assistance :)
Be careful,
We've seen problem caused by invalid output of "AI" just about a week ago.
--
Matus UHLAR - fantomas, [email protected] ; http://www.fantomas.sk/
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