On Sep 1, 2005, at 7:49 AM, Gerhard Fiedler wrote:

> In many cases, what you seem to call user agent and what you seem
> to call smtp client are both parts of one program.

I think that's pretty rare...

> Since it is exactly the purpose of the "B" in BCC that the recipient is
> /not/ listed in any headers, I also assume that your smtp client 
> strips out
> such a header line before sending the message if it receives one with 
> it
> from your user agent.
>
SMTP clients should NEVER strip ANY headers.  Period.

BillW
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