before:
NameVirtualHost *:443
<VirtualHost *:443>
   UseCanonicalName Off
   LogLevel debug

   VirtualDocumentRoot /home/user/python/www
.
.
.
</VirtualHost>


after:
NameVirtualHost *:443
<VirtualHost *:443>
   ServerName www.my.domain.com
   LogLevel debug

   DocumentRoot /home/user/python/www
.
.
.
</VirtualHost>