Spammers' Upend DNS

Saint Aardvark writes "eWeek reports on the latest trick of spammers: getting around DNS-based lookups. By registering a domain *after* the spam goes out advertising it, they can get around blacklists. However, that causes all sorts of problems for ISPs and anti-spam services. Paul Judge, CTO at Ciphertrust, says "Even in large enterprises, it's becoming very common to see a large spam load cripple the DNS infrastructure.""

Comments

Auto-register domains

[crow]

Some anti-spam group should set up a spam filter that looks for domain names, and registers any that it sees that aren't valid. They would point to a web site that politely explains to users how stupid they are for clicking on a link in spam.

I expect spammers would drop that technique quite quickly if that were done.

Re:Thats a nice stunt

[Kissing Crimson]

Yup. If it shouldn't come in, and it can't be returned, drop it on the floor.

So often times my (l)users ask me why they received an email saying their computer is infected with a virus (bogus bounces due to a virii changing their source addresses)

My servers drop anything that doesn't seem right: virus infections, RBL tagged connections, obviously forged senders, etc. When a message gets delivered to the bit bucket; no more processing, no more network traffic, no more (l)user complaints.

And I never get a complaint.