postfix正在向var / mail / user而不是gmail发送邮件

Question

i have configured postfix and i currently hosted my site in ubuntu, nginx and i have installed sendmail as well as i am completly new to this i would highly appreciate any detailed information about wheather i have to install any other services and change any configurations.thank you in advance

<?php

    if(isset($_POST['submit'])) {
        $name = $_POST['username'];
        $email = $_POST['email'];
        $number = $_POST['phone'];
        $profession = $_POST['profession'];

        $to = '[e-mail]';
        $subject = 'user registration';
        $phone = "phone number:".$number;
        $message = "client details:"."
"."Name:".$name."
"."email:".$email."
"."phone number:".$number."
"."profession:".$profession;
        $headers = "From:".$email;

    if(mail($to, $subject, $message, $headers)) {
        header("Location: ../../thankyouNew.html");
    } else {
        header("Location: ../../somethingWrong.html");
    }
}

?>

Answer 1

Even if you can accomplish sending an email using the mail() function, I will not recommend it to you. You will have some other problems, like spam....

so instead I would choose a SMTP Library like PHPMailer.

Here is their documentation: https://github.com/PHPMailer/PHPMailer