Hey there!

eacademics.iitd.ac.in (sportal) is only accessible from IITD Intranet.

If you want to access eacademics site outside the campus, then you need to configure VPN on your system to access the same.
You can get your VPN keys by sending an email to sysadm@cc.iitd.ac.in . Please refer to CSC website (csc.iitd.ac.in) on how to configure VPN.

If you are on IITD network and are still getting this page, then please check your DNS entries.