Hello all,
has anyone noticed that when LinkedIn receives Out-Of-Office/Automatic-Replies
from domains that are fully configured with DKIM, LinkedIn reports that DKIM
failed (signature verification failed) and DMARC fails?
Scenario.
1.LinkedIn sends invite to someone @mydomain.com <http://mydomain.com/> (hosted
on Office 365 which is fully configured with SPF and DKIM)
2.mydomain.com <http://mydomain.com/> (office 365) sends an automatic reply
back to Linkedin with empty Mail-From (because it is a bounce) but correctly
DKIM signed.
3.LinkedIn sends forensic report back stating that DKIM failed.
However,
when I test the same scenario with GSuite, it verifies correctly and passes
DMARC.
1. GSuite sends invite to someone @mydomain.com <http://mydomain.com/> (hosted
on Office 365)
2. mydomain.com <http://mydomain.com/> (office 365) sends an out-of-office
reply back to GSuite with empty Mail-From (because it is a bounce) but
correctly DKIM signed.
3. Gsuite correcly verifies the email and DKIM passes.
Does the above indicate wrong DKIM validation done at LinkedIn. Why would they
be different? The exactly same scenario was used in both tests.
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