Outgoing mails using server address instead of domain

[syedasif11]

I have a website on shared hosting. I have enabled SPF for my domain using CPanel. When I send emails from my domain using PHP script, the outgoing emails appear to be using my server's address (i.e. example@ln5.xyzdns.com) instead of my domain example.com. And therefore they are being marked as spam by Gmail and Hotmail as they are unable to verify the SPF record. Has anyone run into such a problem.

Please suggest something.

[PIS]

You must add headers for email, sending via PHP.
like

<?php

$Name = "Da Duder"; //senders name
$email = "sales@proiserv.com"; //senders e-mail adress
$recipient = "support@proiserv.com"; //recipient
$mail_body = "The text for the mail..."; //mail body
$subject = "Subject text"; //subject
$header = "From: www.proiserv.com"; //optional headerfields

mail($recipient, $subject, $mail_body, $header); //mail command ?>

or

you also can set

ini_set('sendmail_from', 'postmaster@proiserv.com');