--- spambayes-1.0.4/spambayes/Dibbler.py.orig	2005-08-30 21:49:26.000000000 +0900
+++ spambayes-1.0.4/spambayes/Dibbler.py	2006-10-31 20:21:52.000000000 +0900
@@ -527,7 +527,11 @@
         headers = []
         headers.append("HTTP/1.1 200 OK")
         headers.append("Connection: close")
-        headers.append("Content-Type: %s" % contentType)
+        # 2005-08-30: updated to support iso-2022-jp, by owa.
+        if contentType == 'text/html':
+            headers.append("Content-Type: text/html; charset=utf-8")
+        else:
+            headers.append("Content-Type: %s" % contentType)
         headers.append("Date: %s" % httpNow)
         for name, value in extraHeaders.items():
             headers.append("%s: %s" % (name, value))