Question

PHP mail() does not work on digitalocean ubuntu 16.04 server

my tools: server= digitalocean domain= godaddy installed apache/2.4.18 php 7.0.30 ubuntu 16.04

i have tried install sendmail and configure it as below:

sudo apt-get install sendmail

and configure the /etc/hosts

sudo nano /etc/hosts

i am sure it contains 127.0.0.1 localhost localhost.localdomain myhostname and i made

sendmailconfig

yes for all questions in sendmail config. also restarted apache2 with

sudo service apache2 restart

it is not sending mail. can u help me?

i tried send mail with send.php it contains:

<?php
$to = 'sendto@outlook.com';
$title = 'title of mail';
$content = 'hello from world';
$titles = 'From: sendfrom@outlook.com' . "\r\n" .
    'Reply-To: sendfrom@outlook.com' . "\r\n" .
    'X-Mailer: PHP/' .phpversion();
mail($to, $title, $content, $titles);
?>

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Hello friend!

This email should fail to be delivered at outlook.com because your server will not be an authorized sender for outlook.com. Microsoft will drop this and consider it a spoofed/spam sender. You can read more about SPF, the underlying function for this, here:

http://www.openspf.org/FAQ/How_does_it_work

You will want the From email to always be from a domain that you can speak for, so that you can delegate the authority properly.

Kind Regards, Jarland