diff --git a/addons/crm/crm_lead.py b/addons/crm/crm_lead.py
index 484f628c5c0..43d0b18b0c7 100644
--- a/addons/crm/crm_lead.py
+++ b/addons/crm/crm_lead.py
@@ -1022,6 +1022,12 @@ Update your business card, phone book, social media,... Send an email right now
             through message_process.
             This override updates the document according to the email.
         """
+        # remove default author when going through the mail gateway. Indeed we
+        # do not want to explicitly set user_id to False; however we do not
+        # want the gateway user to be responsible if no other responsible is
+        # found.
+        create_context = dict(context or {})
+        create_context['default_user_id'] = False
         if custom_values is None:
             custom_values = {}
         defaults = {
@@ -1029,14 +1035,13 @@ Update your business card, phone book, social media,... Send an email right now
             'email_from': msg.get('from'),
             'email_cc': msg.get('cc'),
             'partner_id': msg.get('author_id', False),
-            'user_id': False,
         }
         if msg.get('author_id'):
             defaults.update(self.on_change_partner_id(cr, uid, None, msg.get('author_id'), context=context)['value'])
         if msg.get('priority') in dict(crm_stage.AVAILABLE_PRIORITIES):
             defaults['priority'] = msg.get('priority')
         defaults.update(custom_values)
-        return super(crm_lead, self).message_new(cr, uid, msg, custom_values=defaults, context=context)
+        return super(crm_lead, self).message_new(cr, uid, msg, custom_values=defaults, context=create_context)
 
     def message_update(self, cr, uid, ids, msg, update_vals=None, context=None):
         """ Overrides mail_thread message_update that is called by the mailgateway
diff --git a/addons/hr_recruitment/models/hr_recruitment.py b/addons/hr_recruitment/models/hr_recruitment.py
index a6cd84d0445..5d52ca247cd 100644
--- a/addons/hr_recruitment/models/hr_recruitment.py
+++ b/addons/hr_recruitment/models/hr_recruitment.py
@@ -392,13 +392,17 @@ class Applicant(models.Model):
             through message_process.
             This override updates the document according to the email.
         """
+        # remove default author when going through the mail gateway. Indeed we
+        # do not want to explicitly set user_id to False; however we do not
+        # want the gateway user to be responsible if no other responsible is
+        # found.
+        self = self.with_context(default_user_id=False)
         val = msg.get('from').split('<')[0]
         defaults = {
             'name': msg.get('subject') or _("No Subject"),
             'partner_name': val,
             'email_from': msg.get('from'),
             'email_cc': msg.get('cc'),
-            'user_id': False,
             'partner_id': msg.get('author_id', False),
         }
         if msg.get('priority'):
diff --git a/addons/project_issue/project_issue.py b/addons/project_issue/project_issue.py
index 13eb0e14db0..f25eb43e9d9 100644
--- a/addons/project_issue/project_issue.py
+++ b/addons/project_issue/project_issue.py
@@ -394,6 +394,12 @@ class project_issue(osv.Model):
             through message_process.
             This override updates the document according to the email.
         """
+        # remove default author when going through the mail gateway. Indeed we
+        # do not want to explicitly set user_id to False; however we do not
+        # want the gateway user to be responsible if no other responsible is
+        # found.
+        create_context = dict(context or {})
+        create_context['default_user_id'] = False
         if custom_values is None:
             custom_values = {}
         context = dict(context or {}, state_to='draft')
@@ -402,11 +408,10 @@ class project_issue(osv.Model):
             'email_from': msg.get('from'),
             'email_cc': msg.get('cc'),
             'partner_id': msg.get('author_id', False),
-            'user_id': False,
         }
         defaults.update(custom_values)
 
-        res_id = super(project_issue, self).message_new(cr, uid, msg, custom_values=defaults, context=context)
+        res_id = super(project_issue, self).message_new(cr, uid, msg, custom_values=defaults, context=create_context)
         email_list = self.email_split(cr, uid, [res_id], msg, context=context)
         partner_ids = filter(None, self._find_partner_from_emails(cr, uid, [res_id], email_list, force_create=False, context=context))
         self.message_subscribe(cr, uid, [res_id], partner_ids, context=context)