This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. 1443854658@qq.com Invalid Address, ERROR_CODE :550, ERROR_CODE :Ip frequency limited. http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=20022&&no=1000725 Received:from [192.168.0.4] (cpe-74-72-15-136.nyc.res.rr.com [74.72.15.136]) by mx.zohomail.com with SMTPS id 1408934025108364.110052554694; Sun, 24 Aug 2014 19:33:45 -0700 (PDT) Message-ID:<53FAA086.60209@oneusaedu.org> Date:Sun, 24 Aug 2014 22:33:42 -0400 From:Richie Chen <richie@oneusaedu.org> User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 To: Mary <1443854658@qq.com> Subject:Company Info Content-Type:multipart/mixed; boundary="------------040900010001020409050005"

By clicking on QQ mail help, we have the following:

550 Ip frequency limited

The explanation says that QQ server limits the frequency of mail sending from this IP, with undisclosed number of mails per minute / per hour / per day.

And it asks end users to report to mail service provider.

Please help.


Thanks.