Interesting. I'll check with our CA then. I've paid a significant amount of these 5% taxes over the past 2 years to ebixcash. They outright reject transfers beyond 700k INR otherwise.
It's probably because EbixCash isn't set up to handle remmitances by non-residents. Using a bank where you have an NRO account should allow you to remit upto 1 million USD.