From: "Geo" 

"Rich"  wrote in message news:422fe6b0{at}w3.nls.net...
>>an untrusted channel not a secure channel.  Think of it as similar to
delivering a signed download over HTTP vs. any download (signed or not)
over HTTPS.<<

I'm not sure which you are claiming is secure but the signed example
requires both client ends to use the same signing system and the https
example is between you and your server but not the rest of the email
transaction. In the first case email isn't secure because everyone isn't
using the same signing system (it's not required) and in the second example
it's wide open between your server and every other server on the planet so
again it's not secure.

>>To schedule I meeting

In this example you assume everyone you are inviting to the meeting is a
hard core computer user, a fair assumption if you work for a computer
related company but not if you work for a plastics company where most
employees barely grasp the concept that an email address has to have an {at}
in it..

Geo.

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