Amsterdam, the new SPAM king

We have been seeing a ton of spam from Amsterdam for the past few months. We have systematically blocked most of Asia, Africa, South America, and others from being able to email us. We've only had a couple of complaints from customers we are hosting SPAM filtering for.

For those companies we just opened up an exception.

What really surprised us though was Amsterdam sending us SPAM and now NDR (Non Delivery Report) attacks.

These are emails that are spoofed by pretending to be sent from legitimate addresses, and then when they get rejected they get sent to the legitimate ones.

Amsterdam runs the risk of losing the ability to email anyone in the states if all of us block their email. That would cripple their internet capabilities, and their sales of little glass bottles with holes in them.

I thought those people were too interested in smoking and getting high on er um.. life to be doing such things? I wonder if the Chinese are somehow involved?