[Zope] attribute error 'sendall' in sendmail tag

[Cornelis J. de Brabander]

Hi all,
I'm upgrading from zope 2.4.3 to 2.5.1. In an application I have a mailform
to send mail to multiple recipients using the sendmail tag. The to field
consists of a comma-separated list of mailaddresses. It works in 2.4.3. In
2.5.1 I get an attribute error, vallue 'sendall'. Traceback below. Where do
I start looking?
tia, cb

Traceback (innermost last):
  File E:\zope\251\lib\python\ZPublisher\Publish.py, line 150, in
publish_module
  File E:\zope\251\lib\python\ZPublisher\Publish.py, line 114, in publish
  File E:\zope\251\lib\python\Zope\__init__.py, line 159, in
zpublisher_exception_hook
    (Object: cur14)
  File E:\zope\251\lib\python\ZPublisher\Publish.py, line 98, in publish
  File E:\zope\251\lib\python\ZPublisher\mapply.py, line 88, in mapply
    (Object: Mailer)
  File E:\zope\251\lib\python\ZPublisher\Publish.py, line 39, in call_object
    (Object: Mailer)
  File E:\zope\251\lib\python\OFS\DTMLMethod.py, line 127, in __call__
    (Object: Mailer)
  File E:\zope\251\lib\python\DocumentTemplate\DT_String.py, line 473, in
__call__
    (Object: Mailer)
  File E:\zope\251\lib\python\Products\MailHost\SendMailTag.py, line 116, in
render
    (Object: fswrul.fsw.leidenuniv.nl)
  File E:\zope\251\lib\python\Products\MailHost\MailHost.py, line 156, in
send
    (Object: )
  File E:\zope\251\lib\python\Products\MailHost\MailHost.py, line 201, in
_send
    (Object: )
  File E:\zope\251\bin\lib\smtplib.py, line 466, in sendmail
  File E:\zope\251\bin\lib\smtplib.py, line 316, in ehlo
  File E:\zope\251\bin\lib\smtplib.py, line 247, in putcmd
  File E:\zope\251\bin\lib\smtplib.py, line 235, in send
  File <string>, line 1, in sendall
AttributeError: (see above)