I am having trouble with the mail() function in PHP when running in the debugger. I get an "SMTP server response: 501 5.5.4 Invalid Address" error when I call the mail function, but only in the debugger. The code works fine on the normal web site. Can somebody point me in the right direction?

I am sure it is an INI file tweak I need to do on my development machine, but I am not sure which one.

Thanks!

Kevin

Code snippet follows:

$subject_internal = "[Waiting List: $eventname]";
$headers_internal = 'Date: '.date('r')."\r\n";
$headers_internal .= "From: <$FromEmail>" . "\r\n";
$headers_internal .= "Reply-To: $FromEmail" . "\r\n";
$headers_internal .= "X-Mailer: CorgiMail 1.0" . "\r\n";
$headers_internal .= 'MIME-Version: 1.0' . "\r\n";
$headers_internal .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";

// Mail it to everyone on the internal event mailing list
$l = connectcw();
$q = "select * from eventmailinglist where eid=$eid";
$res = @mysql_query($q, $l);
while ($mt = @mysql_fetch_array($res))
{
@mail($mt['email'], $subject_internal, $message_internal, $headers_internal);
}

// now mail it to the member
@mail($FromEmail, $subject_member, $message_member, $headers_member);

disconnectcw($l);

Probably your web site runs SMTP server (like sendmail) locally and therefore defaul setting for SMTP (localhost) works fine.
Your Windows machine probably runs without SMTP servers and you just have to get the probelem with the defaults