X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/7cd171b76e5bd3cb825c2a8720bc1fe4ad9b37e0..2546388c27720eaaada4bb63574ba1f32e6ddf4e:/src/src/routers/dnslookup.c

diff --git a/src/src/routers/dnslookup.c b/src/src/routers/dnslookup.c
index b4ad5eafd..e4f7a2539 100644
--- a/src/src/routers/dnslookup.c
+++ b/src/src/routers/dnslookup.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2015 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 #include "../exim.h"
@@ -291,6 +291,11 @@ for (;;)
   /* Deferral returns forthwith, and anything other than failure breaks the
   loop. */
 
+  if (rc == HOST_FIND_SECURITY)
+    {
+    addr->message = US"host lookup done insecurely";
+    return DEFER;
+    }
   if (rc == HOST_FIND_AGAIN)
     {
     if (rblock->pass_on_timeout)
@@ -305,6 +310,22 @@ for (;;)
 
   if (rc != HOST_FIND_FAILED) break;
 
+  if (ob->fail_defer_domains)
+    switch(match_isinlist(fully_qualified_name,
+	  CUSS &ob->fail_defer_domains, 0,
+	  &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
+      {
+      case DEFER:
+	addr->message = US"lookup defer for fail_defer_domains option";
+	return DEFER;
+
+      case OK:
+	DEBUG(D_route) debug_printf("%s router: matched fail_defer_domains\n",
+	  rblock->name);
+	addr->message = US"missing MX, or all MXs point to missing A records,"
+	  " and defer requested";
+	return DEFER;
+      }
   /* Check to see if the failure is the result of MX records pointing to
   non-existent domains, and if so, set an appropriate error message; the case
   of an MX or SRV record pointing to "." is another special case that we can
@@ -335,22 +356,6 @@ for (;;)
           addr->message);
         }
       }
-    if (ob->fail_defer_domains)
-      {
-      switch(match_isinlist(fully_qualified_name,
-	    CUSS &ob->fail_defer_domains, 0,
-	    &domainlist_anchor, addr->domain_cache, MCL_DOMAIN, TRUE, NULL))
-	{
-	case DEFER:
-	  addr->message = US"lookup defer for fail_defer_domains";
-	  return DEFER;
-
-	case OK:
-	  DEBUG(D_route) debug_printf("%s router: matched fail_defer_domains\n",
-	    rblock->name);
-	  return DEFER;
-	}
-      }
     return DECLINE;
     }