As it's for catchall purpose, so it's not a valid email address, and cannot be used for emailing purpose other than collection of invalid emails sent to your domain.

因为它的收集目的，所以它不是一个有效的电子邮件地址，并不能用于发送电子邮件之外的其他目的而采集的无效电子邮件发送给您的网域。