Hello, recently I changed host of my website and when a visitor clicks "contact us" button in my website (in which one needs to enter his/ her email, name, phone , etc) and submit his/her message then I get email. Before this hosting I used to get emails from the visitor who filled the form so it was easier for me to reply but now after I changed the host I get email as "mydomain@hosting-company-domain" instead of the visitor's email. I messaged them then they told me something about SMTP authenticate using PHP, please guide me to fix this.