Posted by Toby Inkster on 08/07/06 07:01

leeana1 wrote:

> Hi all, didn't know where else to go to ask this. I know you can use
> headers in e-mails to verify that an e-mail has not been tampered with,

No you can't. You can tamper with the headers just as easily as you can
tamper with the body.

The only way to make an e-mail tamper-proof is for the sender to include a
crypographic signature (using, e.g. PGP or SMIME). Of course, even then,
the e-mail can still be tampered with, but any tampering can be easily
detected.

--
Toby A Inkster BSc (Hons) ARCS
Contact Me ~ http://tobyinkster.co.uk/contact

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