David Brodbeck wrote:
> On Mon, 20 Sep 2004 10:40:39 -0400, Kevin Peuhkurinen wrote
>> Mozilla Mail and Thunderbird add X-Mozilla-Status and Status2
>> headers to all emails they recieve.   I do not believe they are ever
>> added to outgoing emails, even if you are forwarding an email that
>> already has them.
> 
> (And the little light goes on...)
> 
> Is this why I've been receiving spam that's marked as already read in
> Thunderbird?  I've been wondering about that.  I suspect the
> idea is to try to
> get around Thunderbird's junk mail controls, since they're
> only run on unread
> messages.

MUA's creating headers for their own internal purposes is a dangerous idea.  
But many do it.  This may be the tip of the iceberg here.

Maybe there's a way to protect headers from being pre-filled.  How about 
something like this?

Create header names spaces
Not-For-Transfer-*:
X-Not-For-Transfer-*:
header name space (the second is a subset of the existing X-*: namespace)

Modify the SMTP standard to the effect that MTAs MUST strip all 
[X-]Not-For-Transfer-*: headers

Grandfather BCC as a synonym for Not-For-Transfer-BCC:

[EMAIL PROTECTED]                      805.964.4554 x902
Hispanic Business Inc./HireDiversity.com         Software Engineer
perl -e"map{y/a-z/l-za-k/;print}shift" "Jjhi pcdiwtg Ptga wprztg,"

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