No código abaixo, recebo um erro emmailServer.sendmail(gmailUser, m.to_addr, msg.as_string())

 2011-08-12 17:33:02,542 ERROR  send exception


  Traceback (most recent call last):
    File "sendmail.py", line 33, in bulksend
      mailServer.sendmail(gmailUser, m.to_addr, msg.as_string()).replace(u'\xa0', '')
    File "/usr/lib/python2.4/email/Message.py", line 129, in as_string
      g.flatten(self, unixfrom=unixfrom)
    File "/usr/lib/python2.4/email/Generator.py", line 82, in flatten
      self._write(msg)
    File "/usr/lib/python2.4/email/Generator.py", line 113, in _write
      self._dispatch(msg)
    File "/usr/lib/python2.4/email/Generator.py", line 139, in _dispatch
      meth(msg)
    File "/usr/lib/python2.4/email/Generator.py", line 205, in _handle_multipart
      g.flatten(part, unixfrom=False)
    File "/usr/lib/python2.4/email/Generator.py", line 82, in flatten
      self._write(msg)
    File "/usr/lib/python2.4/email/Generator.py", line 113, in _write
      self._dispatch(msg)
    File "/usr/lib/python2.4/email/Generator.py", line 139, in _dispatch
      meth(msg)
    File "/usr/lib/python2.4/email/Generator.py", line 182, in _handle_text
      self._fp.write(payload)
  UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 173: ordinal not in range(128)
  o

Isto é osend método:

def send(request)
    qs = "......."
    if qs.count():
        smaid = qs[0].id
        gmailUser = '[email protected]'
        gmailPassword = 'xx'
        mailServer = smtplib.SMTP('smtp.gmail.com', 587)
        mailServer.ehlo()
        mailServer.starttls()
        mailServer.ehlo()
        mailServer.login(gmailUser, gmailPassword)
        tosend = MailQueue.objects.filter(school = smaid, send = 0)
        for m in tosend:
            msg = MIMEMultipart()
            msg['From'] = gmailUser
            msg['To'] = m.to_addr
            msg["Content-type"] = "text/html"
            sub = m.subject
            sub = sub.replace(u"\u2019"," ")
            msg['Subject'] = sub
            body = m.body
            body = body.replace(u"\u2019"," ")
            msg.attach(MIMEText(body, 'html'))
            mailServer.sendmail(gmailUser, m.to_addr, msg.as_string())
            m.send = 1
            m.save()
        mailServer.close()
    except:
    write_exception("send exception")