I have setup Outbound messages for Case, Comment, and Contact objects and their respective sf_notifications configs. Case and Comment objects are being received without problems. Contact object are being reject by Drupal.
Things I have ruled out:
User send as on the Salesforce side (Same user is used for Case and Comment)
Workflow logic (Every time a contact is created or updated when 1 = 1)
Endpoint URL (all endpoint urls are the same)
All field maps are enabled in Drupal to recieve notifications.
I am out of ideas on why these messages are rejected. Anyone dealt with this?