> I am having a large (20%) of messages fail dkim. If I do some random > checks, it looks like most of the failing messages are from the > outlook.com cloud. Does any one else have this? Or is my setup just not > properly checking dkim of outlook.com?
how should i guess ? i see o365 not dkim sign at all, this is ok when spf pass, but not often spf_helo fails, should dmarc care of spf_helo ? :) more help needs more info from you
On 28.05.24 12:47, Marc wrote:
I am only looking at signature verifications of dkim, nothing else. My software currently does not log selector and domain of failing signatures, so I am just doing an mx lookup and 'guessing' that outgoing mail originate from something similar. It is just to much of a coincidence that everything is outlook. Maybe my software or their software is not 100% compatible with what is being signed.
what about replacing such software? With one that logs proper info?
add: header: X-Verification-Result: dkim=fail -@ xxx...@karllagerfeld.com [@]# dig +short -t mx karllagerfeld.com 10 fallback1.mx.nxs.nl. 5 karllagerfeld-com.mail.protection.outlook.com. add: header: X-Verification-Result: dkim=fail -@ xxxx...@hotmail.com [@]# dig +short -t mx hotmail.com 2 hotmail-com.olc.protection.outlook.com. etc etc.
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