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diff --git a/lisp/mailpost.el b/lisp/mailpost.el
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+;;
+;; P O S T . E L
+;;
+;; Yet another mail interface.  this for the rmail system to provide
+;;  the missing sendmail interface on systems without /usr/lib/sendmail,
+;;   but with /usr/uci/post.
+;;
+;; created by: Gary Delp <delp at huey.Udel.Edu>
+;;             Mon Jan 13 14:45:12 1986
+;;
+;;
+
+;; (setq send-mail-function 'post-mail-send-it)
+
+(defun post-mail-send-it ()
+  "\
+the MH -post interface for rmail-mail to call.
+to use it, include (setq send-mail-function 'post-mail-send-it) in site-init."
+  (let ((errbuf (if mail-interactive
+		    (generate-new-buffer " post-mail errors")
+		  0))
+	(temfile "/tmp/,rpost")
+	(tembuf (generate-new-buffer " post-mail temp"))
+	(case-fold-search nil)
+	delimline
+	(mailbuf (current-buffer)))
+    (unwind-protect
+	(save-excursion
+	  (set-buffer tembuf)
+	  (erase-buffer)
+	  (insert-buffer-substring mailbuf)
+	  (goto-char (point-max))
+	  ;; require one newline at the end.
+	  (or (= (preceding-char) ?\n)
+	      (insert ?\n))
+	  ;; Change header-delimiter to be what post-mail expects.
+	  (goto-char (point-min))
+	  (search-forward (concat "\n" mail-header-separator "\n"))
+	  (replace-match "\n\n")
+	  (backward-char 1)
+	  (setq delimline (point-marker))
+	  (if mail-aliases
+	      (expand-mail-aliases (point-min) delimline))
+	  (goto-char (point-min))
+	  ;; ignore any blank lines in the header
+	  (while (and (re-search-forward "\n\n\n*" delimline t)
+		      (< (point) delimline))
+	    (replace-match "\n"))
+	  ;; Find and handle any FCC fields.
+	  (let ((case-fold-search t))
+	    (goto-char (point-min))
+	    (if (re-search-forward "^FCC:" delimline t)
+		(mail-do-fcc delimline))
+	    ;; If there is a From and no Sender, put it a Sender.
+	    (goto-char (point-min))
+	    (and (re-search-forward "^From:"  delimline t)
+		 (not (save-excursion
+			(goto-char (point-min))
+			(re-search-forward "^Sender:" delimline t)))
+		 (progn
+		   (forward-line 1)
+		   (insert "Sender: " (user-login-name) "\n")))
+	    ;; don't send out a blank subject line
+	    (goto-char (point-min))
+	    (if (re-search-forward "^Subject:[ \t]*\n" delimline t)
+		(replace-match ""))
+	    (if mail-interactive
+		(save-excursion
+		  (set-buffer errbuf)
+		  (erase-buffer))))
+	  (write-file (setq temfile (make-temp-name temfile)))
+	  (set-file-modes temfile 384)
+	  (apply 'call-process
+		 (append (list (if (boundp 'post-mail-program)
+				   post-mail-program
+				 "/usr/uci/lib/mh/post")
+			       nil errbuf nil
+			       "-nofilter" "-msgid")
+			 (if mail-interactive '("-watch") '("-nowatch"))
+			 (list temfile)))
+	  (if mail-interactive
+	      (save-excursion
+		(set-buffer errbuf)
+		(goto-char (point-min))
+		(while (re-search-forward "\n\n* *" nil t)
+		  (replace-match "; "))
+		(if (not (zerop (buffer-size)))
+		    (error "Sending...failed to %s"
+			   (buffer-substring (point-min) (point-max)))))))
+      (kill-buffer tembuf)
+      (if (bufferp errbuf)
+	  (switch-to-buffer errbuf)))))