Hello, I have this problem trying to send email through a Laravel app, I have checked the MX records and they seem fine, I can send and receive emails through the web interface, but setting the SMTP configuration in the PHP environment, I get the error:
Expected response code 250 but got code "553", with message "553 Relaying disallowed as Example <
hello@example.com>
I checked the "Send email as" and the email address is set there.