Revert "do not use twisted.names.client.lookupAddress(), reactor.reso…

…lve() is fine"

This reverts commit 61cb303.
For some reason, this breaks on one of my servers...

bley.py

@@ -26,8 +26,8 @@
 # SUCH DAMAGE.
 
 from twisted.internet.protocol import Factory
+from twisted.names import client
 from twisted.internet import defer
-from twisted.internet import reactor
 
 import psycopg2
 import datetime
@@ -253,7 +253,7 @@ def check_dnsl(self, lst, ip):
 
         rip = reverse_ip(ip)
         lookup = '%s.%s' % (rip, lst)
-        d = reactor.resolve(lookup)
+        d = client.lookupAddress(lookup)
         return d
 
 class BleyPolicyFactory(Factory):