send empty SERVFAIL on exeeded retargetcount and log failures

PowerDNS · Nov 26, 2013 · dfd1b82 · dfd1b82
1 parent 5584bca
commit dfd1b82
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/pdns/packethandler.cc b/pdns/packethandler.cc
@@ -1206,6 +1206,9 @@ DNSPacket *PacketHandler::questionOrRecurse(DNSPacket *p, bool *shouldRecurse)
 
   retargeted:;
     if(retargetcount > 10) {    // XXX FIXME, retargetcount++?
+      L<<Logger::Warning<<"Abort CNAME chain resolution after "<<--retargetcount<<" redirects, sending out servfail. Initial query: '"<<p->qdomain<<"'"<<endl;
+      delete r;
+      r=p->replyPacket();
       r->setRcode(RCode::ServFail);
       return r;
     }