Do the following steps:
cd /usr/local/cpanel/base/frontend/xmail ln -s ../x/cells/ pico -w index.html
In index.html, find the following lines near the bottom:
</cpanelfeature></cpanelif> </table>
Add these lines before the end table (</table>) tag:
<font face="Courier New, mono"> <cpanelfeature cpanelpro_mailscanner><br> <tr valign='middle'><br> <td height='25' width='21'> <img src='images/arrow-let.gif' width='14' height='10'> </td><br> <td height='25' width='354'> <a href='cells/mailscanner/index.html'>MailScanner Configuration</a> </td></font><br> </tr><br> </cpanelfeature><br>
Then save the file.