Not receiving emails from php mail() function

Posted December 1, 2016 10.7k views
PHPEmailUbuntu 16.04

I’m not receiving emails from mail() function.

I created a php test:

    ini_set( 'display_errors', 1 );
    error_reporting( E_ALL );
    $from = "";
    $to = "";
    $subject = "PHP Mail Test script";
    $message = "This is a test to check the PHP Mail functionality";
    $headers = "From:" . $from;
$headers .= "Reply-To: $to";

The output is…


I’m using a LEMP droplet on Ubuntu 16.06. I already installed postfix, opened port 25 and checked my host file… localhost.crazytraction localhost amsterdam

which I think is correct (amsterdam is the hostname)

I can receive the email in one of my accounts, but I tried other 3 and none of them received the email, even Gmail is not receiving it.

What Am I doing wrong?

Btw, I tested to send an email using the same function on another droplet and it worked, so it has to be something with the environment, but I cannot figure what it is!

Thank you.

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Submit an Answer
1 answer

Your SPF record is invalid and you are not sending all the required headers an e-mail should have.

  • The headers are enough because I’m using the same script from another server and it works.
    I want to do the SPF, but saying is wrong doesn’t help too much. Could you be more specific?