I own a full domain and the site has been indexed according to WMT but it doesn't appear in the search results. But I think there some errors with Google's crawler bot, under the crawler error report it says: 1. Google couldn't communicate with the DNS server. 2. Server connectivity: Request timed out or site is blocking Google. 3. Crawl postponed because robots.txt is inaccessible. Does anyone know what seems to be the problem?