PHP sendmail not sending

Answer 1

Assuming that sendmail is working on your system, and that PHP is configured to use it correctly, try adding -f in the additional parameters, like this...

mail($EMAIL, $subject, $message, '[email protected]'

This sets the envelope with a proper from address. See more on the PHP site: http://www.php.net/manual/en/function.mail.php#92528

Answer 2

There a lot of possible reason that could explain why your email is sent and not received. Beside just setting up your SMTP server there are other things you need to do to make sure your email isn't just dropped before it reaches his destination.

You should take a look at this article that explains, what you should check :

http://www.codinghorror.com/blog/2010/04/so-youd-like-to-send-some-email-through-code.html

In summary you need to :

• Make sure the computer sending the email has a Reverse PTR record
• Configure DomainKeys Identified Mail in your DNS and code
• Set up a SenderID record in your DNS

Answer 3

Check your mail log (usually /var/log/maillog). It would show the message arriving from PHP, and any delivery attempts/rejection notices from the MX of the receiver.