From e6f8db9f94a1546d7a8f2030e178e033fe5b1604 Mon Sep 17 00:00:00 2001
From: Scott Kitterman <scott@kitterman.com>
Date: Mon, 23 Sep 2019 11:35:44 -0400
Subject: [PATCH] More reslience fixes

---
 dkimpy_milter/__init__.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dkimpy_milter/__init__.py b/dkimpy_milter/__init__.py
index 8ef5eb1..98181ef 100644
--- a/dkimpy_milter/__init__.py
+++ b/dkimpy_milter/__init__.py
@@ -265,6 +265,7 @@ class dkimMilter(Milter.Base):
 
     def check_dkim(self, txt):
         res = False
+        self.header_a = None
         for y in range(self.has_dkim):  # Verify _ALL_ the signatures
             d = dkim.DKIM(txt)
             try:
@@ -305,6 +306,7 @@ class dkimMilter(Milter.Base):
                 self.dkim_comment = str(x)
                 if milterconfig.get('Syslog'):
                     syslog.syslog("check_dkim: {0}".format(x))
+                self.header_d = None
             if not self.header_a:
                 self.header_a = 'rsa-sha256'
             if res:
@@ -346,6 +348,7 @@ class dkimMilter(Milter.Base):
                                                  result_comment=
                                                  self.dkim_comment)
             )
+            self.header_a = None
         return
 
 # get parent domain to be signed for if fdomain is a subdomain