$directors = file("qw.txt");
foreach ( $directors as $director ) {

    $result =  $mailSMTP->send( $director, 'Семинар ' , $message, $headers);
    if($result === true){
        echo "Письмо успешно отправлено";
    }
    else{
        echo "Письмо не отправлено. Ошибка: " . $result;
    }

    }

class SendMailSmtpClass {

    public $smtp_username;
    public $smtp_password;
    public $smtp_host;
    public $smtp_from;
    public $smtp_port;
    public $smtp_charset;

    public function __construct($smtp_username, $smtp_password, $smtp_host, $smtp_from, $smtp_port = 25, $smtp_charset = "utf-8") {
        $this->smtp_username = $smtp_username;
        $this->smtp_password = $smtp_password;
        $this->smtp_host = $smtp_host;
        $this->smtp_from = $smtp_from;
        $this->smtp_port = $smtp_port;
        $this->smtp_charset = $smtp_charset;
    }



    function send($mailTo, $subject, $message, $headers) {
        $contentMail = "Date: " . date("D, d M Y H:i:s") . " UTrn";
        $contentMail .= 'Subject: =?' . $this->smtp_charset . '?B?'  . base64_encode($subject) . "=?=rn";
        $contentMail .= $headers . "rn";
        $contentMail .= $message . "rn";

        try {
            if(!$socket = @fsockopen($this->smtp_host, $this->smtp_port, $errorNumber, $errorDescription, 30)){
                throw new Exception($errorNumber.".".$errorDescription);
            }
            if (!$this->_parseServer($socket, "220")){
                throw new Exception('Connection error');
            }

            $server_name = $_SERVER["SERVER_NAME"];
            fputs($socket, "HELO $server_namern");
            if (!$this->_parseServer($socket, "250")) {
                fclose($socket);
                throw new Exception('Error of command sending: HELO');
            }

            fputs($socket, "AUTH LOGINrn");
            if (!$this->_parseServer($socket, "334")) {
                fclose($socket);
                throw new Exception('Autorization error');
            }



            fputs($socket, base64_encode($this->smtp_username) . "rn");
            if (!$this->_parseServer($socket, "334")) {
                fclose($socket);
                throw new Exception('Autorization error');
            }

            fputs($socket, base64_encode($this->smtp_password) . "rn");
            if (!$this->_parseServer($socket, "235")) {
                fclose($socket);
                throw new Exception('Autorization error');
            }

            fputs($socket, "MAIL FROM: <".$this->smtp_username.">rn");
            if (!$this->_parseServer($socket, "250")) {
                fclose($socket);
                throw new Exception('Error of command sending: MAIL FROM');
            }

            $mailTo = ltrim($mailTo, '<');
            $mailTo = rtrim($mailTo, '>');
            fputs($socket, "RCPT TO: <" . $mailTo . ">rn");
            if (!$this->_parseServer($socket, "250")) {
                fclose($socket);
                throw new Exception('Error of command sending: RCPT TO');
            }

            fputs($socket, "DATArn");
            if (!$this->_parseServer($socket, "354")) {
                fclose($socket);
                throw new Exception('Error of command sending: DATA');
            }

            fputs($socket, $contentMail."rn.rn");
            if (!$this->_parseServer($socket, "250")) {
                fclose($socket);
                throw new Exception("E-mail didn't sent");
            }

            fputs($socket, "QUITrn");
            fclose($socket);
        } catch (Exception $e) {
            return  $e->getMessage();
        }
        return true;
    }

    private function _parseServer($socket, $response) {
        while (@substr($responseServer, 3, 1) != ' ') {
            if (!($responseServer = fgets($socket, 256))) {
                return false;
            }
        }
        if (!(substr($responseServer, 0, 3) == $response)) {
            return false;
        }
        return true;

    }
}