When some spamming is detected by web hosting companies or spam filters, the concerned IP addresses are blocked automatically. At present I have observed that BSNL ip addresses are frequently found in the blocked lists.
When a particular IP address is blocked by a web host, the users of the dynamic IP addresses of the subject ISP experience a “Denial of Service”.
Web server administrators should exercise some due diligence before they block a given IP address since blindly blocking the IP address tantamounts to a “Denial of Access offence” under ITA 2008.
It is possible that some competitors of BSNL in the ISP business may be targetting BSNL by getting the BSNL addresses blocked by undertaking an organized spam attack from BSNL IP addresses.
BSNL should do a study of how many of their IP addreses are now in the blocked list of major spam filters.
I have been experiencing such blocking of addresses in the range 18.104.22.168/20 during my site maintenance activities. In such cases I need to use an alternate ISP to log in and request the web host manager to unblock my IP address.
Though on my specific request my web host manager removes it from the IP block list since I am maintaining my site with them, the visitors have no such choice to get their IP addresses unblocked and the site therefore remains blocked for them.
A solution needs to be found to this problem. Comments are welcome.