Here ist more about the DKIM story in DMARC and how SendGrid, Mailgun, etc., handle it:
* vm.imp.ch generates a private key and a public key. * vm.imp.ch signs the email for sample.org with dkim_new=selct01:sample.org * The public key is hosted at vmcustomer-1234.imp.ch * sample.org sets up a CNAME: selct01._domainkey.sample.org CNAME vmcustomer-1234.imp.ch Regards Rainer
smime.p7s
Description: Kryptografische S/MIME-Signatur
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