Variable: uce-default-headers
uce-default-headers is a customizable variable defined in uce.el.gz.
Value
"Errors-To: nobody@localhost\nPrecedence: bulk\n"
Documentation
Additional headers to use when responding to a UCE with M-x uce-reply-to-uce (uce-reply-to-uce).
These are mostly meant for headers that prevent delivery errors reporting.
Source Code
;; Defined in /usr/src/emacs/lisp/obsolete/uce.el.gz
(defcustom uce-default-headers
"Errors-To: nobody@localhost\nPrecedence: bulk\n"
"Additional headers to use when responding to a UCE with \\[uce-reply-to-uce].
These are mostly meant for headers that prevent delivery errors reporting."
:type '(choice (const nil) string))