Note that DKIM does not necessarily sign the message contents. [1] DKIM is only really (in a general sense) intended to provide cryptographic proof that the ori

Note that DKIM does not necessarily sign the message contents. [1] DKIM is only really (in a general sense) intended to provide cryptographic proof that the originating server is permitted to send it. If you need a non-reputable, dated message, you really should use time stamping servers. [1] https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail#Content_modification https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail#Con...