} 
    } 

    Function PutLine($connection,$line) 
    { 
        if($this->debug) 
            $this->OutputDebug("C $line"); 
        return(fputs($connection,"$line\r\n")); 
    } 

    Function ValidateEmailAddress($email) 
    { 
        if(IsSet($this->preg)) 
        { 
            if(strlen($this->preg)) 
                return(preg_match($this->preg,$email)); 
        } 
        else 
        { 
                       $this->preg=(function_exists("preg_match")  ?  "/".str_replace("/",  "\\/",  $this-
>email_regular_expression)."/" : ""); 
            return($this->ValidateEmailAddress($email)); 
        } 
        return(eregi($this->email_regular_expression,$email)!=0); 
    } 

    Function ValidateEmailHost($email,&$hosts) 
    { 
        if(!$this->ValidateEmailAddress($email)) 
            return(0); 
        $user=$this->Tokenize($email,"@"); 
        $domain=$this->Tokenize(""); 
        $hosts=$weights=array(); 
        $getmxrr=$this->getmxrr; 
        if(function_exists($getmxrr) 
        && $getmxrr($domain,$hosts,$weights)) 
        { 
            $mxhosts=array(); 
            for($host=0;$host<count($hosts);$host++) 
                $mxhosts[$weights[$host]]=$hosts[$host]; 
            KSort($mxhosts); 
            for(Reset($mxhosts),$host=0;$host<count($mxhosts);Next($mxhosts),$host++) 
                $hosts[$host]=$mxhosts[Key($mxhosts)]; 
        }