Corteza Email sending Failed

Hello Team,
I installed corteza on unbuntu 20.04 and i configured .env file as explained in the video, I also configured the Email SMTP with my personnal Email but when i try to create and account to corteza front-end I have this issue

could not send email: gomail: could not send email 1: 550 Verification failed for info@example.tld The mail server does not recognize info@example.tld as a valid sender. Sender verify failed