We have a working website for more than a year. Everything was ok, site worked, appeared in the relevant Google searches etc.
Now, one day we discover that the site totally removed from Google Search results. (I don't complain that it's low, not that). It just never appears, even if I search Google for the site name itself, it does not shows.
The site subscribed to Google Webmaster Tools, Google Analytics and AdWords (currently no Ad campaigns are running). All these tools show no single warning. We received no complain email or anything.
I don't quite understand what could be the reason or is it a bug in a Google (?!)
Bing does not show the website either, but we never checked bing before.
Site does appear on Yahoo Search. On
ask.com it does not appear.
Any clue would be helpful.
One thing that I can think of - we are a dynamic DNS provider and we give to our users, domains like
user.website.com. It is possible that some user may use that domain for some malicious activity, like sending spam or running a malware website or anything else.
I know that some antivirus (I think avira), probably because of the aforementioned reason, marks our website as a malware site.
The site in question is