One of the first precedents on email signatures
http://www.theregister.co.uk/2006/04/12/email_sigs_legal/
Reading the article it appears that a DKIM signature added by the
infrastructure would not constitute a signature for the purposes of making a
contract. A DKIM signature added at the client would only count if there was
an afirmative signature action, e.g using PGP, S/MIME or adding a name to
the bottom of the email
Phill
smime.p7s
Description: S/MIME cryptographic signature
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