Hello Friends, Sorry to re-open the topic, but as my problem is relative....
Well, I have my app deployed in GAE and I'm using the Google Apps Standard to manage my domain. Follow my configurations: In db.py: mail=Mail() mail.settings.server='gae' mail.settings.sender='administra...@kzeroconsultoria.com.br' mail.settings.login='administra...@kzeroconsultoria.com.br:mypassword' In default.py: message = message + "Onde nos Achou?: %s \n" % onde mail.send(to=['paulosi...@kzeroconsultoria.com.br'],subject='Orçamento pelo Site',message=message) In GAE log: W 05-01 09:41AM 53.149 Mail.send failure:Unauthorized sender The accounts adminstra...@kzeroconsultoria.com.br and paulosi...@kzerconsultoria.com.br are administrator accounts in Google App Standards. What's is the matter ?