make depth limiter somewhat more sophisticated

diff --git a/pdns/syncres.cc b/pdns/syncres.cc
index 6e61982b38196b4743f8eb861b193c22b8047681..7c2ed96cd676d3d586353cec3b2162bfb31aa4fd 100644 (file)
--- a/pdns/syncres.cc
+++ b/pdns/syncres.cc
@@ -606,7 +606,7 @@ bool SyncRes::doCNAMECacheCheck(const string &qname, const QType &qtype, vector<
     prefix.append(depth, ' ');
   }
 
-  if(depth>9) {
+  if((depth>9 && d_outqueries>10 && d_throttledqueries>5) || depth > 15) {
     LOG(prefix<<qname<<": recursing (CNAME or other indirection) too deep, depth="<<depth<<endl);
     res=RCode::ServFail;
     return true;