Make error logging more explicit to aid debugging

CHANGES

@@ -18,6 +18,7 @@
  - Catch more ascii encoding errors to improve resilience against bad data
    (LP: #1844189)
  - Fix sysv init so it works (LP: #1839487)
+ - Make error logging more explicit to aid debugging
 
 1.1.0 2019-04-12
  - Add SubDomains option to enable signing for sub-domains (LP: #1811535)

dkimpy_milter/__init__.py

@@ -304,7 +304,7 @@ class dkimMilter(Milter.Base):
             except Exception as x:
                 self.dkim_comment = str(x)
                 if milterconfig.get('Syslog'):
-                    syslog.syslog("check_dkim: {0}".format(x))
+                    syslog.syslog("check_dkim: Internal program fault while verifying: {0}".format(x))
             try:
                 # i= is optional and dkimpy is fine if it's not provided
                 self.header_i = codecs.decode(d.signature_fields.get(b'i'), 'ascii')
@@ -316,7 +316,7 @@ class dkimMilter(Milter.Base):
             except Exception as x:
                 self.dkim_comment = str(x)
                 if milterconfig.get('Syslog'):
-                    syslog.syslog("check_dkim: {0}".format(x))
+                    syslog.syslog("check_dkim: Internal proram fuault extracting header a or d: {0}".format(x))
                 self.header_d = None
             if not self.header_a:
                 self.header_a = 'rsa-sha256'