Variable: message-ignored-mail-headers
message-ignored-mail-headers is a customizable variable defined in
message.el.gz.
Value
"^\\([GF]cc\\|Resent-Fcc\\|Xref\\|X-Draft-From\\|X-Gnus-Agent-Meta-Information\\):"
Documentation
Regexp of headers to be removed unconditionally before mailing.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-ignored-mail-headers
"^\\([GF]cc\\|Resent-Fcc\\|Xref\\|X-Draft-From\\|X-Gnus-Agent-Meta-Information\\):"
"Regexp of headers to be removed unconditionally before mailing."
:group 'message-mail
:group 'message-headers
:link '(custom-manual "(message)Mail Headers")
:type 'regexp)