_"Mostly we have lost our ranking on our product pages. These pages are gone in the "omitted results" of google. _
It all started 3 months ago, when we had to face a duplicate content issue due to a technical problems with our servers: 2 other domains that we own have been pushed online on google, while they shouldn't have. They have created millions of links to our main domain in a few days, and duplicate version / redirection to our main website."
so I am on the same page when your servers published the two additional domains that created this issue I am assuming that you have removed those domains are no longer being served right?
when they were live they were on the same C block or IP? as you said they were served from the same server so going to say yes.
then request removal of the offending domains.
http://googlewebmastercentral.blogspot.com/2007/04/requesting-removal-of-content-from-our.html
http://webmasters.stackexchange.com/questions/15389/removing-domain-from-google-search-results
http://moz.com/community/q/how-to-remove-wrong-crawled-domain-from-google-index
http://www.1stonthelist.ca/articles/omitted-results/
I would go as far as clearing the DNS records of those domains after you export the zone files in order to keep this from happening in the future.
I would then file
After I would check my site for duplicate content especially content that is already possibly on Manufacturers websites things like that because That will cause this type of issue on your product pages.
I would then use
&
http://www.siteliner.com/products
_http://www.techentice.com/best-free-copyscape-alternatives/ _
first check that everything is rendering correctly using
http://www.feedthebot.com/tools/spider/
you most likely were omitted by Google for having little to no unique content. Eight Digital millennium takedown Act or DMTA
do you know anyone that would want to harm you?
http://moz.com/community/q/google-said-repeat-the-search-with-the-omitted-results-included
https://productforums.google.com/forum/#!topic/webmasters/Ie9aJfZVpkw
Jane has some wise things to say in here and remember
"any URLs that are different are different in Google's eyes, unless the modifier is a # symbol."
_ This sounds like removal due to duplication rather than DMCA - the omission is usually noted as being because of DMCA notices if they are the reason, e.g. http://img.labnol.org/images/2008/07/googlesearchdmcacomplaint.png_
I think if you start with the beginning of the issues and start clearing them up instead of spending time trying to optimize you will make much more progress.
I hope this was of help,
Thomas
