Error 542, You are not allowed to send your message when sending mail

Procédure

Why does this error occur?

This error occurs when the e-mail address entered in your code is not authorised to send e-mails from the SMTP server.

How can I fix this problem?

To send an email in PHP, via a form, you need to use the following code:

$to = "test@test.com"; $from = "test@votredomaine.com"; $entete = "MIME-Version: 1.0"; $entete .= "Content-type: text/html; charset=iso-8859-1\r\n"; $entete .= "From: $from <  $from  >\r\n"; $entete .= "Reply-to: $from\r\n"; $entete .= "X-Mailer: PHP\r\n"; $entete .= "X-Priority: 1\r\n"; $entete .= "Return-Path: <  $from  > \r\n"; $msg = "test\r\n"; $sujet = "*** Test Mail ***\r\n"; $res = (mail($to,$sujet,$msg,$entete)); if (true === $res) { $texte = "Mail sent to"".$to."\"\n"; printf (nl2br("$texte")); } else { $texte = "**** ERROR : PROBLEM SENDING MAIL ! ****"; printf (nl2br("$text")); }