Initial revision

diff --git a/lisp/setaddr.el b/lisp/setaddr.el
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+;;; setaddr.el --- determine whether sendmail is configured on this machine
+
+;; Copyright (C) 1997 Free Software Foundation, Inc.
+
+;; Maintainer: FSF
+;; Keywords: mail
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; If neither sendmail nor Emacs knows what host address to use
+;; for this machine, ask for it, and save it in site-start.el
+;; so we won't have to ask again.
+
+;; This uses a heuristic about the output from sendmail
+;; which may or may not really work.  We will have to find
+;; out by experiment.
+
+;;; Code:
+
+(or mail-host-address
+    (let (sendmail-configured)
+      (with-temp-buffer " mail-host-address"
+       (call-process sendmail-program nil t nil "-bv" "root")
+       (goto-char (point-min))
+       (setq sendmail-configured (looking-at "root@")))
+      (or sendmail-configured
+         (let (buffer)
+               (setq mail-host-address
+                     (read-string "Specify your host's fully qualified domain name: ")))
+         ;; Create an init file, and if we just read mail-host-address,
+         ;; make the init file set it.
+         (unwind-protect
+             (save-excursion
+               (set-buffer (find-file-noselect "site-start.el"))
+               (setq buffer (current-buffer))
+               ;; Get rid of the line that ran this file.
+               (if (search-forward "(load \"setaddr\")\n")
+                   (progn
+                     (beginning-of-line)
+                     (delete-region (point)
+                                    (progn (end-of-line)
+                                           (point)))))
+               ;; Add the results
+               (goto-char (point-max))
+               (insert "\n(setq mail-host-address "
+                       (prin1-to-string mail-host-address)
+                       ")\n")
+               (condition-case nil
+                   (save-buffer)
+                 (file-error nil)))
+           (if buffer
+               (kill-buffer buffer))))))
+
+;;; setaddr.el ends here