Index: roundup/cgi/client.py
===================================================================
--- roundup/cgi/client.py	(Revision 70407)
+++ roundup/cgi/client.py	(Arbeitskopie)
@@ -14,7 +14,7 @@
 from roundup.exceptions import *
 from roundup.cgi.exceptions import *
 from roundup.cgi.form_parser import FormParser
-from roundup.mailer import Mailer, MessageSendError
+from roundup.mailer import Mailer, MessageSendError, encode_quopri
 from roundup.cgi import accept_language
 from roundup import xmlrpc
 
@@ -1029,13 +1029,13 @@
                 to = [self.mailer.config.ADMIN_EMAIL]
                 subject = "Templating Error: %s" % exc_info[1]
                 content = cgitb.pt_html()
-                message, writer = self.mailer.get_standard_message(
-                    to, subject)
-                writer.addheader('Content-Transfer-Encoding', 'quoted-printable')
-                body = writer.startbody('text/html; charset=utf-8')
-                content = StringIO(content)
-                quopri.encode(content, body, 0)
-                self.mailer.smtp_send(to, message)
+                message = self.mailer.get_standard_message(to, subject)
+                # delete existing content-type headers
+                del message['Content-type']
+                message['Content-type'] = 'text/html; charset=utf-8'
+                message.set_payload(content)
+                encode_quopri(message)
+                self.mailer.smtp_send(to, str(message))
                 # Now report the error to the user.
                 return self._(error_message)
             except:
Index: roundup/mailer.py
===================================================================
--- roundup/mailer.py	(Revision 70407)
+++ roundup/mailer.py	(Arbeitskopie)
@@ -23,6 +23,7 @@
     orig = msg.get_payload()
     encdata = quopri.encodestring(orig)
     msg.set_payload(encdata)
+    del msg['Content-Transfer-Encoding']
     msg['Content-Transfer-Encoding'] = 'quoted-printable'
 
 class Mailer:
@@ -55,7 +56,7 @@
         Subject and author are encoded using the EMAIL_CHARSET from the
         config (default UTF-8).
 
-        Returns a Message object and body part writer.
+        Returns a Message object.
         '''
         # encode header values if they need to be
         charset = getattr(self.config, 'EMAIL_CHARSET', 'utf-8')
@@ -70,8 +71,8 @@
             message = MIMEMultipart()
         else:
             message = Message()
+            message.set_type('text/plain')
             message.set_charset(charset)
-            message['Content-Type'] = 'text/plain; charset="%s"'%charset
 
         try:
             message['Subject'] = subject.encode('ascii')
@@ -115,6 +116,7 @@
         """
         message = self.get_standard_message(to, subject, author)
         message.set_payload(content)
+        encode_quopri(message)
         self.smtp_send(to, str(message))
 
     def bounce_message(self, bounced_message, to, error,
Index: roundup/roundupdb.py
===================================================================
--- roundup/roundupdb.py	(Revision 70407)
+++ roundup/roundupdb.py	(Arbeitskopie)
@@ -505,9 +505,9 @@
                 encode_quopri(message)
 
             if first:
-                mailer.smtp_send(sendto + bcc_sendto, message)
+                mailer.smtp_send(sendto + bcc_sendto, str(message))
             else:
-                mailer.smtp_send(sendto, message)
+                mailer.smtp_send(sendto, str(message))
             first = False
 
     def email_signature(self, nodeid, msgid):