This patch disables the badmailfrom check where RELAYCLIENT is set.

This allows you to put your own domain in badmailfrom, but still allow your
customers to relay through your mail server.

Also Works with the qmail-smtpd-auth patch from http://members.elysium.pl/brush/qmail-smtpd-auth/
so your smtp authenticated users are also permitted to relay.

The basic idea behind the need for this concept is so you can put your own domain in badmailfrom,
and still allow your trusted users to be able to send mail through your mail server.

Jeremy Kitchen -- kitchen@scriptkitchen.com 12/23/2003

diff -urN qmail-1.03.orig/qmail-smtpd.c qmail-1.03/qmail-smtpd.c
--- qmail-1.03.orig/qmail-smtpd.c	1998-06-15 05:53:16.000000000 -0500
+++ qmail-1.03/qmail-smtpd.c	2003-12-23 16:41:44.386786384 -0600
@@ -240,7 +240,7 @@
 void smtp_mail(arg) char *arg;
 {
   if (!addrparse(arg)) { err_syntax(); return; }
-  flagbarf = bmfcheck();
+  if (!relayclient) flagbarf = bmfcheck();
   seenmail = 1;
   if (!stralloc_copys(&rcptto,"")) die_nomem();
   if (!stralloc_copys(&mailfrom,addr.s)) die_nomem();