Apply by doing:
	cd /usr/src
	patch -p0 < 023_mail.patch

Rebuild and install mail:
	cd usr.bin/mail
	make cleandir
	make obj
	make depend
	make && make install

Index: src/usr.bin/mail/collect.c
===================================================================
RCS file: /cvs/src/usr.bin/mail/collect.c,v
retrieving revision 1.20
diff -u -r1.20 collect.c
--- usr.bin/mail/collect.c	16 Jan 2001 05:36:08 -0000	1.20
+++ usr.bin/mail/collect.c	11 Apr 2002 21:53:24 -0000
@@ -192,7 +192,8 @@
 		    value("interactive") != NULL && !lastlong &&
 		    (value("dot") != NULL || value("ignoreeof") != NULL))
 			break;
-		if (linebuf[0] != escape || lastlong) {
+		if (linebuf[0] != escape || value("interactive") == NULL ||
+		    lastlong) {
 			if (putline(collf, linebuf, !longline) < 0)
 				goto err;
 			continue;