[FIX] mail_tracking_mailgun: Message error on bounce

mail_tracking_mailgun/__openerp__.py

@@ -7,7 +7,7 @@
 {
     "name": "Mail tracking for Mailgun",
     "summary": "Mail tracking and Mailgun webhooks integration",
-    "version": "9.0.1.2.0",
+    "version": "9.0.1.2.1",
     "category": "Social Network",
     "website": "https://odoo-community.org/",
     "author": "Tecnativa, "

mail_tracking_mailgun/models/res_partner.py

@@ -30,8 +30,7 @@ class ResPartner(models.Model):
             body = _('Email has been bounced: %s\n'
                      'Reason: %s\n'
                      'Event: %s') % (partner.email, reason,
-                                     event and event.get('Message-Id',
-                                                         _('unknown')))
+                                     event and event.id or _('unknown'))
             partner.message_post(body=body)
 
     @api.multi

mail_tracking_mailgun/tests/test_mailgun.py

@@ -384,7 +384,7 @@ class TestMailgun(TransactionCase):
         self.partner._email_bounced_set('test_error', self.event)
         self.assertEqual(len(self.partner.message_ids), message_number)
         self.partner.email = ""
-        self.partner._email_bounced_set('test_error', self.event)
+        self.partner._email_bounced_set('test_error')
         self.assertEqual(len(self.partner.message_ids), message_number)
 
     @mock.patch(_packagepath + '.models.mail_tracking_email.requests')