Access denied报错

tulip_orchid

The message cannot be delivered due to a configuration error on the server. Please contact your Administrator.
<mailserver.qwe.cn #5.3.0 smtp;553 5.3.0 <****[email=****@abc.com]@abc.com[/email]>... ID=2328 Access denied, sender is [email=****@qwe.cn]****[email=****@qwe.cn]@qwe.cn[/email]>[/email]

请问哪位知道这个报错是什么意思啊？