From ebfb0b5fc3ea984a138613da3b086f5e2be11aa4 Mon Sep 17 00:00:00 2001
From: Scott Kitterman <scott@kitterman.com>
Date: Sat, 3 Mar 2018 10:42:59 -0500
Subject: [PATCH] Fix crash when verifying if domain for signing was not set

---
 CHANGES                   | 1 +
 dkimpy_milter/__init__.py | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 95bd7f6..68bc957 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,5 +1,6 @@
 0.9.4 UNRELEASED
  - Create PID directory if it is missing
+ - Fix crash when verifying if domain for signing was not set
 
 0.9.3 2018-03-02
  - Fixup csl dataset processing for single item lists
diff --git a/dkimpy_milter/__init__.py b/dkimpy_milter/__init__.py
index 56eb640..b0220b2 100644
--- a/dkimpy_milter/__init__.py
+++ b/dkimpy_milter/__init__.py
@@ -160,7 +160,11 @@ class dkimMilter(Milter.Base):
           pass
     # Check or sign DKIM
     self.fp.seek(0)
-    if (self.fdomain in milterconfig.get('Domain')) and (not milterconfig.get('Mode') == 'v'):
+    if milterconfig.get('Domain'):
+        domain = milterconfig.get('Domain')
+    else:
+        domain = ''
+    if (self.fdomain in domain) and (not milterconfig.get('Mode') == 'v'):
       txt = self.fp.read()
       self.sign_dkim(txt)
       result = None