Problem med PHP & SMTP mail

Create User for Gallery. 

MAIL FROM error: .530 authentication required - for help go to http://help.yahoo.com/help/us/sbc/dsl/m ... op-11.html 
RCPT TO error: . 
DATA error: . 
DATA(end)error: . 
QUIT error: . 

An email has been sent to totaltslutihuvet@hotmail.com. 
Your account information is contained within the email.

function sock_mail($auth,$to, $subj, $body, $head, $from){ 
       $lb="\r\n";                        //linebreak 
       $body_lb="\r\n";                //body linebreak 
       $loc_host = "localhost";        //localhost 
       $smtp_acc = "tresk@sbcglobal.net";        //account 
       $smtp_pass="**********";            //password 
       $smtp_host="smtp.sbcglobal.yahoo.com";    //server SMTP 
       $hdr = explode($lb,$head);        //header 
      
       if($body) {$bdy = preg_replace("/^\./","..",explode($body_lb,$body));} 
      
       // build the array for the SMTP dialog. Line content is array(command, success code, additonal error message) 
       if($auth == 1){// SMTP authentication methode AUTH LOGIN, use extended HELO "EHLO" 
           $smtp = array( 
               // call the server and tell the name of your local host 
               array("EHLO ".$loc_host.$lb,"220,250","HELO error: "), 
               // request to auth 
               array("AUTH LOGIN".$lb,"334","AUTH error:"), 
               // username 
               array(base64_encode($smtp_acc).$lb,"334","AUTHENTIFICATION error : "), 
               // password 
               array(base64_encode($smtp_pass).$lb,"235","AUTHENTIFICATION error : ")); 
       } 
       else {// no authentication, use standard HELO    
           $smtp = array( 
               // call the server and tell the name of your local host 
               array("HELO ".$loc_host.$lb,"220,250","HELO error: ")); 
       } 
  
      
       // envelop 
       $smtp[] = array("MAIL FROM: <".$from.">".$lb,"250","MAIL FROM error: "); 
       $smtp[] = array("RCPT TO: <".$to.">".$lb,"250","RCPT TO error: "); 
       // begin data        
       $smtp[] = array("DATA".$lb,"354","DATA error: "); 
       // header 
       $smtp[] = array("Subject: ".$subj.$lb,"",""); 
       $smtp[] = array("To:".$to.$lb,"","");        
       foreach($hdr as $h) {$smtp[] = array($h.$lb,"","");} 
       // end header, begin the body 
       $smtp[] = array($lb,"",""); 
       if($bdy) {foreach($bdy as $b) {$smtp[] = array($b.$body_lb,"","");}} 
       // end of message 
       $smtp[] = array(".".$lb,"250","DATA(end)error: "); 
       $smtp[] = array("QUIT".$lb,"221","QUIT error: "); 

       // open socket 
       $fp = @fsockopen($smtp_host, 25); 
       if (!$fp) echo "<b>Error:</b> Cannot conect to ".$smtp_host."<br>"; 
      
       $banner = @fgets($fp, 1024); 
       // perform the SMTP dialog with all lines of the list 
       foreach($smtp as $req){ 
           $r = $req[0]; 
           // send request 
           @fputs($fp, $req[0]); 
           // get available server messages and stop on errors 
           if($req[1]){ 
               while($result = @fgets($fp, 1024)){if(substr($result,3,1) == " ") { break; }}; 
               if (!strstr($req[1],substr($result,0,3))) echo"$req[2].$result<br>"; 
           } 
       } 
       $result = @fgets($fp, 1024); 
       // close socket 
       @fclose($fp); 
       return 1; 
   }