Comment 2 for bug 293713

I cannot always reproduce it.

In the meantime I got several times this error, when subscribing via portlet.

Traceback (innermost last):
  Module ZPublisher.Publish, line 125, in publish
  Module Zope2.App.startup, line 238, in commit
  Module transaction._manager, line 96, in commit
  Module transaction._transaction, line 395, in commit
  Module transaction._transaction, line 503, in _commitResources
  Module zope.sendmail.delivery, line 87, in tpc_finish
  Module collective.dancing.composer, line 383, in send
  Module zope.sendmail.mailer, line 46, in send
  Module smtplib, line 244, in __init__
  Module smtplib, line 296, in connect
gaierror: (7, 'No address associated with nodename')

But this does not occur always.