In my case, at the moment, I put the Thunderbird connector and I start receiving mails.

I send now a Message from Outlook (customer) to the user in OpenERp and get the following in the Log File of the opernERP Server:

2014-02-16 12:48:59,356 1604 INFO comp openerp.addons.fetchmail.fetchmail: start checking for new emails on imap server user1
2014-02-16 12:49:00,122 1604 INFO comp openerp.addons.mail.mail_thread: Routing mail from Company Demo<democomp@xy.com> to "user1@comp.com" <user1@comp.com> with Message-Id<1AE28A5285E9484387FF99BDBFDE52A50102DDFF8A@SRV-EX1.democomp.local>: direct alias match: (u'res.users', 5, {}, 5, browse_record(mail.alias, 7))
2014-02-16 12:49:00,196 1604 ERROR comp openerp.addons.fetchmail.fetchmail: Failed to fetch mail from imap server user1.
Traceback (most recent call last):
  File "/opt/openerp/server/openerp/addons/fetchmail/fetchmail.py", line 204, in fetch_mail    context=context)
  File "/opt/openerp/server/openerp/addons/mail/mail_thread.py", line 1045, in message_process    thread_id = self.message_route_process(cr, uid, msg_txt, msg, routes, context=context)
  File "/opt/openerp/server/openerp/addons/mass_mailing/mail_thread.py", line 86, in message_route_process    return super(MailThread, self).message_route_process(cr, uid, message, message_dict, routes, context=context)
  File "/opt/openerp/server/openerp/addons/mail/mail_thread.py", line 973, in message_route_process    new_msg_id = model_pool.message_post(cr, uid, [thread_id], context=context, subtype='mail.mt_comment', **mess
age_dict)
  File "/opt/openerp/server/openerp/addons/mail/res_users.py", line 126, in message_post    return self.pool.get('mail.thread').message_post(cr, uid, False, **kwargs)
  File "/opt/openerp/server/openerp/addons/mail/mail_thread.py", line 1526, in message_post    msg_id = mail_message.create(cr, uid, values, context=context)
  File "/opt/openerp/server/openerp/addons/mail/mail_message.py", line 848, in create    user_signature=context.get('mail_notify_user_signature', True))
  File "/opt/openerp/server/openerp/addons/mail/mail_message.py", line 971, in _notify    if message.subtype_id and message.model and message.res_id:
  File "/opt/openerp/server/openerp/osv/orm.py", line 500, in __getattr__    return self[name]
  File "/opt/openerp/server/openerp/osv/orm.py", line 408, in __getitem__    field_values = self._table.read(self._cr, self._uid, ids, field_names, context=self._context, load="_classic_
write")
  File "/opt/openerp/server/openerp/addons/mail/mail_message.py", line 862, in read    self.check_access_rule(cr, uid, ids, 'read', context=context)
  File "/opt/openerp/server/openerp/addons/website_mail/models/mail_message.py", line 65, in check_access_rule    return super(MailMessage, self).check_access_rule(cr, uid, ids=ids, operation=operation, context=context)
  File "/opt/openerp/server/openerp/addons/portal/mail_message.py", line 63, in check_access_rule    return super(mail_message, self).check_access_rule(cr, uid, ids=ids, operation=operation, context=context)
  File "/opt/openerp/server/openerp/addons/mail/mail_message.py", line 784, in check_access_rule    (self._description, operation))
except_orm: (u'Zugriff verweigert', u'Der gew\xfcnschte Vorgang kann aufgrund Sicherheitsbeschr\xe4nkungen nichtausgef\xfchrt werden. Bitte kontaktieren Sie den System Administrator.\n\n(Dokumenten Typ: Message, Vorgang: read
)')

So he recocnize the new mail, but cannot delivery in openERP ?

At the last entry, there standing "Access denied" (in German)

Has someone an idea, what is wrong?

Thank you!