Why the Email of @yahoo.com can't subscribe majordomo at vger.kernel.org ?

[lx]

hi all:
      I want to subscribe the majordomo at vger.kernel.org about netdev. But
It don't work. The error
message is:

########################

Sorry, we were unable to deliver your message to the following address.
<majordomo at vger.kernel.org> <majordomo at vger.kernel.org>:
Remote host said:
553 5.7.1 Hello [106.10.151.226], for your MAIL FROM address
<lxgeek at yahoo.com> <lxgeek at yahoo.com> policy analysis reported: Your
address is not liked source for email
 [MAIL_FROM]

--- Below this line is a copy of the message.

Received: from [106.10.166.120] by nm33.bullet.mail.sg3.yahoo.com with
NNFMP; 29 Dec 2014 05:50:14 -0000
Received: from [106.10.167.174] by tm9.bullet.mail.sg3.yahoo.com with
NNFMP; 29 Dec 2014 05:50:14 -0000
Received: from [127.0.0.1] by smtp147.mail.sg3.yahoo.com with NNFMP;
29 Dec 2014 05:50:14 -0000
X-Yahoo-Newman-Id: 541845.56363.bm at smtp147.mail.sg3.yahoo.com
X-Yahoo-Newman-Property: ymail-3
X-YMail-OSG: 3s0rdfQVM1lPcl7PYi8obCNwfrPXi49mnORqxY8zxPBP3GZ
 WJNE8J4eollOsC50XIZRciC4O4E_2ak65nfZUWIcWZ5l3LThPaGj2NLnRRfb
 ae0Zm7lhLNH5GsT8BCLBOB4KuUeLqo7XFm1uOKu3noMmqMF5qFY9AFTLJRQ4
 GBGBn2RLuVQD2SNVV8kbd0otyfm.jJK.AIyCnUymqqi45ux3R1Vatzzu4rhk
 N5BsL2uYUufhcjbKBl8vSClY4dcBN6gvwCT21AVlPYza0ekIPAS7Y2XPdAKK
 vJnRPbj8hTidiNVr__g8eTjWBLR7sMPrRZV351BsXsyUrfw4sQitpvobSko0
 K_Jg9o_aFPuMgr5qCAS1DjKUVd2JcpGU5.XVp58mZXwi0rg1uePB4oRavhv_
 Uj1zX4WBx8q7FSfWsbMGZvSZZpYLWuBrEKNHO34BXJqDr1HzW_ObaY.nzzxC
 SpuijN8aIG380ZIhgW7xcd6sYG2fFIb6Gxyfg0A6JFhvasNVdXbdcDvJGw_D
 zsYWQ706pxDyoznM1hIXt5B9NwImQu7NLtUPSxA--
X-Yahoo-SMTP: Ot9DgBiswBD6.gcTBOjHB_vvEA--
Message-ID: <54A0EB96.3060500 at yahoo.com> <54A0EB96.3060500 at yahoo.com>
Date: Mon, 29 Dec 2014 13:50:14 +0800
From: lx <lxgeek at yahoo.com> <lxgeek at yahoo.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0)
Gecko/20100101 Thunderbird/31.3.0
MIME-Version: 1.0
To: majordomo at vger.kernel.org
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit

subscribe netdev

########################

How to fix it? Thank you.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20141229/2ac968ca/attachment.html