getting bogofilter feedback to the mail server.

[Tom Anderson]

John G Walker wrote:
> You are making the assumption here that the Return-Path is not spoofed,
> which seems to me a highly dubious assumption. Why would a spammer be
> so honest?

Indeed, the only unspoofable part of an email is the first received line 
which was generated by your own mail server.  But even there the helo 
string can be spoofed.

Tom