From 7e5aef167663dc209fda3bd0aeecaa802e50d924 Mon Sep 17 00:00:00 2001
From: "Stuart D. Gathman" <stuart@spidey2>
Date: Tue, 12 Jun 2012 23:09:15 -0400
Subject: [PATCH] Trap NXDOMAIN exception with dnspython.

---
 dkim/dnsplug.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/dkim/dnsplug.py b/dkim/dnsplug.py
index b59ef0a..8f258b0 100644
--- a/dkim/dnsplug.py
+++ b/dkim/dnsplug.py
@@ -27,10 +27,12 @@ __all__ = [
 
 def get_txt_dnspython(name):
     """Return a TXT record associated with a DNS name."""
-    a = dns.resolver.query(name, dns.rdatatype.TXT,raise_on_no_answer=False)
-    for r in a.response.answer:
-        if r.rdtype == dns.rdatatype.TXT:
-            return b"".join(r.items[0].strings)
+    try:
+      a = dns.resolver.query(name, dns.rdatatype.TXT,raise_on_no_answer=False)
+      for r in a.response.answer:
+          if r.rdtype == dns.rdatatype.TXT:
+              return b"".join(r.items[0].strings)
+    except dns.resolver.NXDOMAIN: pass
     return None