我正在使用以下class.phpmailer.php文件作为PHP站点上的注册系统的一部分，但出现以下错误。
我将phpmailer文件的顶部和错误消息放在底部，一旦在实时网站上提交表单，就会看到该错误消息。
/////////////////////////////////////////////////
// PROPERTIES, PUBLIC
/////////////////////////////////////////////////
/**
* Email priority (1 = High, 3 = Normal, 5 = low).
* @var int
*/
public $Priority = 3;
/**
* Sets the CharSet of the message.
* @var string
*/
public $CharSet = 'iso-8859-1';
/**
* Sets the Content-type of the message.
* @var string
*/
public $ContentType = 'text/plain';
/**
* Sets the Encoding of the message. Options for this are
* "8bit", "7bit", "binary", "base64", and "quoted-printable".
* @var string
*/
public $Encoding = '8bit';
/**
* Holds the most recent mailer error message.
* @var string
*/
public $ErrorInfo = '';
/**
* Sets the From email address for the message.
* @var string
*/
public $From = 'noreply@domain.co.uk';
/**
* Sets the From name of the message.
* @var string
*/
public $FromName = 'Name';
/**
* Sets the Sender email (Return-Path) of the message. If not empty,
* will be sent via -f to sendmail or as 'MAIL FROM' in smtp mode.
* @var string
*/
public $Sender = 'noreply@domain.co.uk';
/**
* Sets the Subject of the message.
* @var string
*/
public $Subject = '';
/**
* Sets the Body of the message. This can be either an HTML or text body.
* If HTML then run IsHTML(true).
* @var string
*/
public $Body = '';
/**
* Sets the text-only body of the message. This automatically sets the
* email to multipart/alternative. This body can be read by mail
* clients that do not have HTML email capability such as mutt. Clients
* that can read HTML will view the normal Body.
* @var string
*/
public $AltBody = '';
/**
* Stores the complete compiled MIME message body.
* @var string
* @access protected
*/
protected $MIMEBody = '';
/**
* Stores the complete compiled MIME message headers.
* @var string
* @access protected
*/
protected $MIMEHeader = '';
/**
* Stores the complete sent MIME message (Body and Headers)
* @var string
* @access protected
*/
protected $SentMIMEMessage = '';
/**
* Sets word wrapping on the body of the message to a given number of
* characters.
* @var int
*/
public $WordWrap = 0;
/**
* Method to send mail: ("mail", "sendmail", or "smtp").
* @var string
*/
public $Mailer = 'smtp';
/**
* Sets the path of the sendmail program.
* @var string
*/
public $Sendmail = '/usr/sbin/sendmail';
/**
* Path to PHPMailer plugins. Useful if the SMTP class
* is in a different directory than the PHP include path.
* @var string
*/
public $PluginDir = '';
/**
* Sets the email address that a reading confirmation will be sent.
* @var string
*/
public $ConfirmReadingTo = '';
/**
* Sets the hostname to use in Message-Id and Received headers
* and as default HELO string. If empty, the value returned
* by SERVER_NAME is used or 'localhost.localdomain'.
* @var string
*/
public $Hostname = 'mail.domain.co.uk';
/**
* Sets the message ID to be used in the Message-Id header.
* If empty, a unique id will be generated.
* @var string
*/
public $MessageID = '';
直到最近，一切都运转良好。
我尝试对脚本进行各种更改，但似乎无法解决此错误。
我得到的错误是：
SMTP -> FROM SERVER:250 OK
SMTP -> get_lines(): $data was ""
SMTP -> get_lines(): $str is "501 <>: missing or malformed local part "
SMTP -> get_lines(): $data is "501 <>: missing or malformed local part "
SMTP -> FROM SERVER:501 <>: missing or malformed local part
SMTP -> ERROR: RCPT not accepted from server: 501 <>: missing or malformed local part
SMTP Error: The following recipients failed: SMTP Error: The following recipients failed:
SMTP server error: <>: missing or malformed local part