SMTP Headers for PHP Mailer

Note also that your lines of the e-mail should all end in \r\n and so after the Subject line you should have \r\n\r\n to provide the blank line between the headers and the message body.

SMTP standard: http://tools.ietf.org/html/rfc2821
E-mail format: http://tools.ietf.org/html/rfc2822

$connect = fsockopen($hostname,$port); 
fputs($connect, "EHLO $mydomain\r\n"); 
fputs($connect, "AUTH LOGIN\r\n"); 
fputs($connect, base64_encode($username)."\r\n"); 
fputs($connect, base64_encode($password)."\r\n"); 
fputs($connect, "MAIL FROM: \"$fromname\" <$fromemail>\r\n");
fputs($connect, "RCPT TO:$fullname <$email>\r\n"); 
fputs($connect, "DATA\r\n"); 
fputs($connect, "MIME-Version: 1.0\r\n");
fputs($connect, "Content-Type: text/html\r\n");
fputs($connect, "Content-Transfer-Encoding: base64\r\n");
fputs($connect, "To: $email\r\n");
fputs($connect, "From: "$fromname" <$fromemail>\r\nReply-To: $replyto\r\n");
fputs($connect, "Subject: $subject\r\n\r\n"); 
fputs($connect, "$message\r\n"); 
fputs($connect, ".\r\n"); 
fputs($connect, "QUIT\r\n");

Select allOpen in new window

(Corrected headers in e-mail.)

Have you considered using the free and open-source PHPMailer class?  It might be easier.  Just a thought...
https://code.google.com/a/apache-extras.org/p/phpmailer/

And if you find that you're still wrestling with email anomalies and edge cases (as most of us do) you might want to consider a professionally hosted service.  This one has worked well for me.
http://search.constantcontact.com/index.jsp

Is 'TO' required ? Isnt the same with 'RCPT-TO' ?

There are two parts to sending an e-mail: the SMTP protocol in which RCPT TO is required and the e-mail itself in which the To: header is sent.  The e-mail itself is sent in the SMTP DATA command.  Everything here constitutes what the the e-mail client sees:

fputs($connect, "MIME-Version: 1.0\r\n");
fputs($connect, "Content-Type: text/html\r\n");
fputs($connect, "Content-Transfer-Encoding: base64\r\n");
fputs($connect, "To: $email\r\n");
fputs($connect, "From: "$fromname" <$fromemail>\r\nReply-To: $replyto\r\n");
fputs($connect, "Subject: $subject\r\n\r\n"); 
fputs($connect, "$message\r\n"); 
fputs($connect, ".\r\n"); 

Select allOpen in new window

... and also what the SMTP server essentially ignores. :)

Omg this is so much reading and cant understand it. Please correct the code, this shouldnt be much for you. I really need it. This is the mailer here:

<?php
error_reporting(E_ALL); 

// MESSAGE DETAILS

$fromemail   = "";
$fromname    = "";
$replyto     = "";
$subject     = "";
$fullname    = "";
$email       = "";
$message     = "";

// SMTP INFO

$hostname    = "";
$username    = "";
$password    = "";
$port        = 25;
$mydomain    = "";

// SMTP CONNECT

$connect = fsockopen($hostname,$port); 
fputs($connect, "EHLO \'$mydomain\'\r\n"); 
fputs($connect, "AUTH LOGIN\r\n"); 
fputs($connect, base64_encode($username)."\r\n"); 
fputs($connect, base64_encode($password)."\r\n"); 
fputs($connect, "MAIL FROM: \'$fromname\' <$fromemail>\r\n");
fputs($connect, "RCPT TO: \'$fullname\' <$email>\r\n"); 
fputs($connect, "DATA\r\n"); 
fputs($connect, "MIME-Version: 1.0\r\n");
fputs($connect, "Content-Type: text/html\r\n");
fputs($connect, "Content-Transfer-Encoding: base64\r\n");
fputs($connect, "To: \'$email\'\r\n");
fputs($connect, "From: \'$fromname\' <$fromemail>\r\nReply-To: $replyto\r\n");
fputs($connect, "Subject: \'$subject\'\r\n\r\n"); 
fputs($connect, "\'$message\'\r\n"); 
fputs($connect, ".\r\n"); 
fputs($connect, "QUIT\r\n"); 

?>

Select allOpen in new window

Its not sending. What is wrong?

I tried telnet and the server is working with this headers, so this code sends data wrong. Anybody?

Thanks.

This is working:

<?php
error_reporting(E_ALL);

// MESSAGE DETAILS

$email       = "";
$fromemail   = "";
$fromname    = "";
$replyto     = "";
$subject     = "";
$message     = "";
$mydomain    = "";

// SMTP INFO

$hostname    = "";
$username    = "";
$password    = "";

// SMTP CONNECT

$connect = fsockopen($hostname, 25);
fputs($connect, "EHLO $mydomain\r\n");
fputs($connect, "AUTH LOGIN\r\n");
fputs($connect, base64_encode($username)."\r\n");
fputs($connect, base64_encode($password)."\r\n");
fputs($connect, "MAIL FROM: $fromemail\r\n");
fputs($connect, "RCPT TO: $email\r\n");
fputs($connect, "DATA\r\n");
fputs($connect, "MIME-Version: 1.0\r\n");
fputs($connect, "Content-Type: text/html\r\n");
fputs($connect, "Content-Transfer-Encoding: 8bit\r\n");
fputs($connect, "To: \"$fullname\" <$email>\r\n");
fputs($connect, "From: \"$fromname\" <$fromemail>\r\n");
fputs($connect, "Reply-To: $replyto\r\n");
fputs($connect, "Subject: $subject\r\n\r\n");
fputs($connect, "$message\r\n");
fputs($connect, ".\r\n");
fputs($connect, "QUIT\r\n");

?>

Glad you got there in the end. :)