--- qmail-1.03/qmail-smtpd.c	Mon Jun 15 12:53:16 1998
+++ qmail-1.03brt/qmail-smtpd.c	Mon Apr 30 17:23:35 2001
@@ -50,6 +50,7 @@
 void straynewline() { out("451 See http://pobox.com/~djb/docs/smtplf.html.\r\n"); flush(); _exit(1); }
 
 void err_bmf() { out("553 sorry, your envelope sender is in my badmailfrom list (#5.7.1)\r\n"); }
+void err_brt() { out("553 sorry, this recipient is in my badrecipientto list (#5.7.1)\r\n"); }
 void err_nogateway() { out("553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)\r\n"); }
 void err_unimpl() { out("502 unimplemented (#5.5.1)\r\n"); }
 void err_syntax() { out("555 syntax error (#5.5.4)\r\n"); }
@@ -96,6 +97,9 @@
 int bmfok = 0;
 stralloc bmf = {0};
 struct constmap mapbmf;
+int brtok = 0;
+stralloc brt = {0};
+struct constmap mapbrt;
 
 void setup()
 {
@@ -116,6 +120,11 @@
   if (bmfok == -1) die_control();
   if (bmfok)
     if (!constmap_init(&mapbmf,bmf.s,bmf.len,0)) die_nomem();
+
+  brtok = control_readfile(&brt,"control/badrcptto",0);
+  if (brtok == -1) die_control();
+  if (brtok)
+    if (!constmap_init(&mapbrt,brt.s,brt.len,0)) die_nomem();
  
   if (control_readint(&databytes,"control/databytes") == -1) die_control();
   x = env_get("DATABYTES");
@@ -208,6 +217,17 @@
   return 0;
 }
 
+int brtcheck()
+{
+  int j;
+  if (!brtok) return 0;
+  if (constmap(&mapbrt,addr.s,addr.len - 1)) return 1;
+  j = byte_rchr(addr.s,addr.len,'@');
+  if (j < addr.len)
+    if (constmap(&mapbrt,addr.s + j,addr.len - j - 1)) return 1;
+  return 0;
+}
+
 int addrallowed()
 {
   int r;
@@ -258,6 +278,7 @@
   }
   else
     if (!addrallowed()) { err_nogateway(); return; }
+  if (!env_get("RELAYCLIENT") && brtcheck()) { err_brt(); return; }
   if (!stralloc_cats(&rcptto,"T")) die_nomem();
   if (!stralloc_cats(&rcptto,addr.s)) die_nomem();
   if (!stralloc_0(&rcptto)) die_nomem();