Error code '354' on send email on Laravel

Hi I'm making a web application and need to send some e-mails. I'm using Laravel 5.6, and make the e-mail feature at localhost using Mailtrap to test it, worked fine. But when I put it on the server I got a weird error, like in the picture bellow.

I've configured the system to my host, Hostinger settings.

via Chebli Mohamed