Mail Delivery Failure

[Mail Delivery System]

This message was created automatically by the mail system (ecelerity).

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

>>> uipyy at yahoo.com.cn (after RCPT TO): 550 relaying denied for <uipyy at yahoo.com.cn>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: not available
URL: <http://lists.alioth.debian.org/pipermail/pkg-mate-team/attachments/20160902/e4df156d/attachment.ksh>