Hi posted my question in ur mailing list before 4 days. But still now i didn,t get any response from your side.May i know where is the problem.
Hi,
There are two mails from you and two answers.
Maybe the problem confused you so much you overlooked and/or forgot the answers 
https://lists.riot-os.org/pipermail/devel/2016-February/003488.html
There is a link labeled "next message" you can use to click through the thread to find the answers. Gmail also has a search function that might be of help in case you struggle with the invalid certificate of the archives page.
On a general note: RIOT does not have commercial service as of now, so even if you receive no answers within a certain period that is no reason to think something is broken. There is no "our side"/"your side", we're all just people interested in this project.
Cheers, Ludwig
Hi Giri, hi Ludwig!
There are two mails from you and two answers.
And subscribing the mailing list might also help to receive answers, please visit https://lists.riot-os.org/mailman/listinfo/devel
Gmail also has a search function that might be of help in case you struggle with the invalid certificate of the archives page.
That's the second time in a short period someone called the certificate "invalid". This is incorrect. The certificate is valid and correctly signed by a well-known CA. The problem is, however, that (due to mostly bureaucratic reasons) cacert.org is unfortunately not installed per default on most operating systems/browsers, but you can do so quite easily visiting http://www.cacert.org/index.php?id=3
However, I agree that getting certificates from the letsencrypt project, is probably a better idea. If someone is willing to go forward with this, please let me know and I will happily grant access to the mailing list server.
Cheers, Oleg
Hi ,
https://github.com/RIOT-OS/RIOT/issues/4855
from the above link there is no answer for my question.But i already subscribed.Where i can see my answers.There no notification …I am waiting for 3 or 4 days for your replies.Its really very difficult to get support from your side. Pls try to solve this…