Migrating to new host
For some reasons, you decided to move your site at new host.
Before moving to new host , plan your migration properly otherwise you may end up in a mess.
When you migrate to new host you get new DNS, new IP and new content ( if you manage for it )
Now you may think that you have migrated so why to keep any data at old server so you may put blank pages over there, keeping the old server still live.
This is most worst mistake which is usually done by webmasters which causes their new migrated site to get banned even though there is nothing wrong in it.
The reason for this is :
Since old server is still live, some Googlebots were using the old DNS/old IP and went to old serever and they received a blank page there, other Googlebots were going to new server they were using new DNS, new IP, new Contents. Due to this Google was getting two different pages at same time hence it consider it as an †Cloaking †and you are banned for such mistake.
How to avoid this :
*) Bring a copy of your site up at the new IP address.
*) Update your nameserver to point to the new IP address.
*) Once you see search engine spiders fetch pages from the new IP address, then be sure to take down the copy of your site at the old IP address.
*) Do not do all of the changes at the same time.
*) Make sure there are never two servers responding to requests for your domain dishing out different content.
