From 3d04071d91b51671312d1a0d4aa3e04bcebc3433 Mon Sep 17 00:00:00 2001
From: Gerd Moellmann <gerd@gnu.org>
Date: Tue, 13 Jun 2000 21:35:42 +0000
Subject: [PATCH] (mail-specify-envelope-from): Initialize to nil. 
 Contemporary sendmails issue an X-Authentication-Warning if the sender is set
 with `-f.

---
 lisp/mail/sendmail.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/mail/sendmail.el b/lisp/mail/sendmail.el
index 542a91e0d2c..878ce8a49a3 100644
--- a/lisp/mail/sendmail.el
+++ b/lisp/mail/sendmail.el
@@ -63,7 +63,7 @@ controlled by a separate variable, `mail-specify-envelope-from'."
   :group 'sendmail)
 
 ;;;###autoload
-(defcustom mail-specify-envelope-from t
+(defcustom mail-specify-envelope-from nil
   "*If non-nil, specify the envelope-from address when sending mail.
 The value used to specify it is whatever is found in `user-mail-address'.
 
-- 
2.39.2