Apparently people don’t read RFCs. In RFC 2606 (Reserved Top Level Domains), it clearly states that if you want to construct domain names that are “sure to be invalid and which it is obvious at a glance are invalid” you should use .invalid as the TLD. ( so foo@donotreply.invalid )
It is also one of the reasons IANA reserved “example.com” for use in documentation, and why I feel sorry for the owner of test.com.
Every day, thousands of e-mails are sent (most of them automated) with @donotreply.com as the reply field. You’ve probably received a few yourself. What thousands of people are apparently unaware of is that someone owns this domain, and anyone unlucky enough to actually reply is sending their e-mail to a real person. A real person with a blog, who is telling the world about your stupidity. A real person that receives thousands of e-mails to this domain.
And if you though that was scary, consider that even The Department of Homeland Security is sending e-mails using that domain.
[Via tofugrinder]
