You can override the Return-Path by running sendmail with the -f option.
Mind you, that -f can only be used by "trusted users" (defined, also in
sendmail.cf,) or if the person you are trying to become is the same as the
person you are.
This "trusted users" is no hindrance. Copy /etc/sendmail.cf to $HOME,
enter $USER behind T, set up your own mail spool dir (create dir,
enter path in $HOME/sendmail.cf), and remove authwarnings from O
PrivacyOptions= to turn off the added headers. Format email with to:,
from: cc:, bcc, subject: and pipe into sendmail -i -t -v -f whatever -C
"$HOME/sendmail.cf" -O QueueDirectory="$queuedir"
This is useful to me to make email appear as if it was sent from a
web based email facility which I use (or rather, don't use for sending
because they're a pain).
My IP shows up somewhere in the Received-by:, is it possible to get
around that?
Volker
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