use php mail function on ovh shared hosting windows server

Question

I don't succeed to send mail with the php mail() function.

I would like to use my mail address which I had with hosting : postmaster@my_domain.com.

hosting is the 'perso' offer using windows server.

Is it some configuration to do on php before to use mail function ?

Can I have access to php.ini ?

or maybe something to check/uncheck in ovh manager.

I have searched on google and try some solutions but I found many things and I don't know what is usefull or not.

I have send a request to OVH technical support too but I'm still waiting for an answer.

Now, I have done a very basic script to test the function but it doesn't send mail :

<?php
$headers ='From: postmaster@my_domain.com'."\n";
$headers .='Reply-To: postmaster@my_domain.com'."\n";
$headers .='Content-Type: text/plain; charset="iso-8859-1"'."\n";
$headers .='Content-Transfer-Encoding: 8bit';
if( mail('[email protected]', 'test mail', 'Message of the mail', $headers) ){
    echo 'ok';
}else{
    echo 'erreur';
}
?>

Answer 1

Warning: mail(): Failed to connect to mailserver at "localhost" port 25, verify your "SMTP" and "smtp_port" setting in php.ini or use ini_set()

That means the mail is trying to be sent thanks to the localhost. But ovh provide a specific domain for mailing : smtp.mydomain.com. So you will have to use ini_set() since you can't change the php.ini on shared host :

ini_set("SMTP", "smtp.mydomain.com");
ini_set("sendmail_from", "[email protected]");

$headers ='From: postmaster@my_domain.com'."\n";
$headers .='Reply-To: postmaster@my_domain.com'."\n";
$headers .='Content-Type: text/plain; charset="iso-8859-1"'."\n";
$headers .='Content-Transfer-Encoding: 8bit';

if (
    mail(
        '[email protected]', 
        'test mail', 
        'Message of the mail', 
        $headers
    ) 
){
    echo 'ok';
} else {
    echo 'erreur';
}
echo "Check your email now....<br/>";

But I would recommand to use a library for this, such as SwiftMailer, or PHPMailer