SMTP server response: 550 Authentication is required

[mentalstate]

Hi- I am new to php, trying to make a simple form that emails when submitted. It works fine on my own server, but when I try it on my work server I get: Warning: mail() [function.mail]:

SMTP server response: 550 Authentication is required for relay in C:\inetpub\wwwroot\OMC\estimate3.php on line 159

here are the headers:

 

$headers = "From: [email protected]\n";

$headers .= "X-Mailer: PHP4\n";

$headers .= "X-Priority: 3\n";

$headers .= "MIME-Version: 1.0\n";

$headers .= "Content-Type: multipart/alternative; boundary=\"==MIME_BOUNDRY_alt_main_message\"\n\n";

 

and the mail() function

mail($to,$subject,$body,$headers);

 

let me know if you need more code and ill happily supply it.

 

thanks!

[Pikachu2000]

It means you need to supply valid credentials to the mail server. PHP's mail() function doesn't support SMTP authentication, so you'll most likely need to use a class such as phpMailer, or PEAR::Mail. Talk to the person who administers the mail server regarding what's required.