电子邮件发送错误

[happy]

Mail Error!

SMTP protocol failure!
Host: smtp.21cn.net
Return Code: 553
Return Msg: 553 From , message blocked, RemoteSenderAuth=-1 restriction, remote user is not allowed.
Invision Power Board Error:
Check your SMTP settings from the admin control panel

 

[admin]

这个是邮件系统的一个BUG，下个版本将会修复。