Indian ISPs are riddled with open relays

K

KingKrool

Explorer
I use Sify (supposedly) broadband.

Well, I was trying to, well let us say I was setting up an SMTP server on my comp. When I tried to send email to yahoo.com, it gave me the following error.

553 Mail from 221.134.249.93 not allowed - VS99-IP1 deferred - see help.yahoo.com/help/us/mail/defer/defer-02.html (#5.7.1) [10]

See the link: http://help.yahoo.com/help/us/mail/defer/defer-02.html

Open proxies and open relays are a very common source of spam. Yahoo! uses a variety of techniques to detect these, and Yahoo! does not accept SMTP connections from either open relays or open proxies. Your connection may be rejected because the email server that you use for sending email is probably an "open relay" or "open proxy." These types of email servers can easily be tricked into sending large amounts of unsolicited email.

Many email services refuse mail from such servers, until the server has been fixed to stop relaying spam to innocent users.

To correct this problem, you should contact the system administrator of your mail server (usually "postmaster@your-domain.com") and forward them a copy of the bounced email you received. Otherwise, you should call technical support and alert them of the problem.

You can check to see if your mail server is listed on several of the public open relay DNSBLs. Please note that if your server is not listed at this link, it may still be an open proxy or open relay. Abuse.net provides a web-based open relay test. Instructions to close open relays are readily available on the Internet.........
Click to expand...

This shows that the IP assigned to me by Sickfy is an evil address:

http://rbls.org/?q=221.134.249.93

cbl.abuseat.org http://cbl.abuseat.org cbl.abuseat.org LISTED

xbl.spamhaus.org http://www.spamhaus.org/xbl/ xbl.spamhaus.org LISTED Illegal 3rd party exploits, including proxies, worms and trojan exploits

Stupid buffoons have all their IPs blacklisted... the entire domain is under a shadow.

In fact, if you check the open proxies list at http://www.samair.ru/proxy/, you will find that India has more proxies and open relays than acceptable considering the low internet penetration. The best part is when I did a reverse DNS on these some months ago, ALL of them belonged to ISPs - VSNL, Hathway, Sify and Airtel among others.
 
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