This morning i have received notice from WMT telling googlebot not able to crawl to my HTTPS website. Check the fetch as google and test sitemap in WMT, both are not able to detect the files on my HTTPS site. Other web service testing for sitemap and googlebots also having the similar server error status, however my HTTP version have no issue. Contact the hosting and learn that they have disabled SSLv3 due to POODLE Exploit. I guess they have not found any patch to fix this yet.