X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/7cd1141be4e551e80514c38662ec6e8209608205..cd9868ec7872447f31efd5f175c7f3e90ac92657:/src/src/routers/rf_lookup_hostlist.c

diff --git a/src/src/routers/rf_lookup_hostlist.c b/src/src/routers/rf_lookup_hostlist.c
index 3e7eee137..68ff8c5b0 100644
--- a/src/src/routers/rf_lookup_hostlist.c
+++ b/src/src/routers/rf_lookup_hostlist.c
@@ -1,10 +1,10 @@
-/* $Cambridge: exim/src/src/routers/rf_lookup_hostlist.c,v 1.4 2005/08/09 13:31:53 ph10 Exp $ */
+/* $Cambridge: exim/src/src/routers/rf_lookup_hostlist.c,v 1.10 2007/03/14 11:22:23 ph10 Exp $ */
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2005 */
+/* Copyright (c) University of Cambridge 1995 - 2007 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 
@@ -64,13 +64,13 @@ list of MX hosts. If the first host is the local host, act according to the
 "self" option in the configuration. */
 
 prev = NULL;
-for (h = addr->host_list; h != NULL; prev = h, h = next_h)
+for (h = addr->host_list; h != NULL; h = next_h)
   {
   uschar *canonical_name;
   int rc, len, port;
 
   next_h = h->next;
-  if (h->address != NULL) continue;
+  if (h->address != NULL) { prev = h; continue; }
 
   DEBUG(D_route|D_host_lookup)
     debug_printf("finding IP address for %s\n", h->name);
@@ -103,10 +103,11 @@ for (h = addr->host_list; h != NULL; prev = h, h = next_h)
   /* If explicitly configured to look up by name, or if the "host name" is
   actually an IP address, do a byname lookup. */
 
-  else if (lookup_type == lk_byname || string_is_ip_address(h->name, NULL) > 0)
+  else if (lookup_type == lk_byname || string_is_ip_address(h->name, NULL) != 0)
     {
     DEBUG(D_route|D_host_lookup) debug_printf("calling host_find_byname\n");
-    rc = host_find_byname(h, ignore_target_hosts, &canonical_name, TRUE);
+    rc = host_find_byname(h, ignore_target_hosts, HOST_FIND_QUALIFY_SINGLE,
+      &canonical_name, TRUE);
     }
 
   /* Otherwise, do a DNS lookup. If that yields "host not found", and the
@@ -129,7 +130,8 @@ for (h = addr->host_list; h != NULL; prev = h, h = next_h)
         {
         DEBUG(D_route|D_host_lookup)
           debug_printf("DNS lookup failed: trying getipnodebyname\n");
-        rc = host_find_byname(h, ignore_target_hosts, &canonical_name, TRUE);
+        rc = host_find_byname(h, ignore_target_hosts, HOST_FIND_QUALIFY_SINGLE,
+          &canonical_name, TRUE);
         }
       }
     }
@@ -155,6 +157,12 @@ for (h = addr->host_list; h != NULL; prev = h, h = next_h)
 
   if (rc == HOST_FIND_FAILED)
     {
+    if (hff_code == hff_ignore)
+      {
+      if (prev == NULL) addr->host_list = next_h; else prev->next = next_h;
+      continue;   /* With the next host, leave prev unchanged */
+      }
+
     if (hff_code == hff_pass) return PASS;
     if (hff_code == hff_decline) return DECLINE;
 
@@ -204,6 +212,12 @@ for (h = addr->host_list; h != NULL; prev = h, h = next_h)
       }
     self_send = TRUE;
     }
+
+  /* Ensure that prev is the host before next_h; this will not be h if a lookup
+  found multiple addresses or multiple MX records. */
+
+  prev = h;
+  while (prev->next != next_h) prev = prev->next;
   }
 
 return OK;