Well Since Sify’s ban on Orkut … many people seem to hav difficulty accessing the website…Most of the proxies dont work as there are problems on the logging in page..here are 2 methods i found effective
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For Sify people , Open the Network Connection and use 4.2.2.2 as the preferred DNS server address . Leave the Alt. DNS as it is .
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Use the following proxy which i found working
Start Using Cool Tunel Web Proxy
People having other proxies can post here …
There u r Sify…Nehle pe Dehla (Tit 
for tat)