Orange / SMTP error code 501
smtp;501 5.1.0 Emetteur invalide. Invalid Sender. OFR004_405 [405]
This error suggests that Orange is seeing an issue with the Return-Path (SPF) of the message. Check the settings with your sending email provider to make sure your Return-Path is aligned with your sending domain.
▒▒▓▓▓▓▓▓▓▓▓▓▓▓░█▒░█▓▒░▓▓▓▓▓▓▓▓▓░▒▒▒░▓▓▓▓▓▓▓▓▓░▓█▓▓░█▓▓▓▓▓▓▓▓▓▓▒▒░▒▓▓▓▓▓▓▓▓▓░▓▒█▒▓░▒░░▓▒░▓▒▓▒░▒▓█░░░█▓▓▓▓▓▓▓▓▓▓▓▓█▓▒▒▒█░░▒▒█▒▓▓▓▓▓▓▓▓▓▓▓░▓▓▓▓▓▓▓▓▓░▒█▓░░▓▓▒░░██▒░▓░▓▓░▒░▓▓▓▓▓▓▓▓▓▒█▓▓▓▓▓▓▓▓▓▓░▓▓▒▓▓▓░▓██▒█░▓▓▓▓▓▓▓▓▓░▒░▓▓▓▓▓▓▓▓▓▓░▒▓▓░░▓▓▓▓▓▓▓▓▓▓▓▓█░▓▓▓▓▓▓▓▓▓░▓▓▓▓▓▓▓▓▓░▒░░▒▓░▒▒░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░█▒░░░▓▓▓▓▓▓▓▓▓▓▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒▓▓▓▓▓▓▓▓▓░▓▓▓▓▓▓▓▓▓░▒▒▒▓░▓▓▓▓▓▓▓▓▓▓▓▒▒▓▓▓▓▓▓▓▓▓▒░░▒▒░▒▓░░░█▒█▒▒▒█▒▓▓▓▓▓▓▓▓▓▓▓▒▓▒▓░▓▒▒▒░▓░░▓█░░░▒▒▓▒▓░▒▓▒▓▓▓▓▓▓▓▓▓▒░▒░░▓▓▓▓▓▓▓▓▓▓▓▓▒█░▒▓▓░██▓█▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░█░▒▓▒▒░▒▒░░▓▓▓▓▓▓▓▓▓▒▒█▓▓▓▓▓▓▓▓▓▓▒▒▒░░░▒░▓░░▒░▓▓▓▓▓▓▓▓▓▓▓░▒▒▓▒█░█░▒░░░░▒▓▓▓▓▓▓▓▓▓▓▓▒▓▓▓▓▓▓▓▓▓░█▒░▒░░▒▒░▓█▒▒░▓▒▓█▓▓▓▓▓▓▓▓▓█▒▓█▒▒▓▓▓▓▓▓▓▓▓▒░▒▒▓▓▓▓▓▓▓▓▓█░░▓▓█░░▓▒▒▒▒▓▒█░░▒▓▓▓▓▓▓▓▓▓░░█░▓▒▒▓▒▓▒▒▓▒░░▓▒▓▒▓▓▓▓▓▓▓▓▓▓▒▒▓▒░▓▓▓▓▓▓▓▓▓░▒▒█▒░▓▓▓▓▓▓▓▓▓░▒░░█▓▒▒▒▒░▒░▒▒▒░░▒▓▒█▒▓▒█░▒▒██░░░▓▓▓▓▓▓▓▓▓▒█▓░▓▓▓▓▓▓▓▓▓▒▒▓░▓▓▓▓▓▓▓▓▓░░░▒▓▓▒▓▒██░▓▒░▒▒█░▒▒█▒▓▓▓▓▓▓▓▓▓▓░▓▓▓▓▓▓▓▓▓░█▒▒▓▓▓▓▓▓▓▓▓▓▒░▒▒█▒▓▓▓▓▓▓▓▓▓▓▓▒░▒▓█▒▒▒▒▒▓▒█▓▓▒