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About: J.D. Falk has worked on anti-spam systems and policies for such influential companies as the original Mail Abuse Prevention System, Microsoft, and Yahoo!.  As Return Path’s Director of Product Management for Receiver Products, he now works on products and services which help a growing number of major ISPs deal with spam and related e-mail issues.



J.D. sits on the boards of both the Coalition Against Unsolicited Commercial Email and (on behalf of Return Path) the Messaging Anti-Abuse Working Group, and is also a community organizer, DJ, and writer.

Creative Commons Except where otherwise noted, all postings by J.D. Falk on CircleID are licensed under a Creative Commons License.
Featured Posts — by J.D. Falk 

Spam / blogs / Apr 11, 2008 11:19 AM PST

If It Spams Like a Duck…

We've been wondering what e360 hoped to gain with their recent lawsuits against Spamhaus and others. If they were trying to clarify the right of ISPs to protect their users from spam, then they've certainly done a good job -- especially in this particular case. If it wasn't clear before, Judge Zagel's explanation should satisfy even the most pedantic of filtering opponents: "ISPs acting in good faith to protect their customers are not liable for blocking messages that some spammer claims are not spam..." ›››

By J.D. Falk | Comments: 1 | Views: 1130

Spam / blogs / Apr 02, 2008 2:44 PM PST

Trust in Email Begins with Authentication

As most CAUCE supporters already know, forging 'From:' or other commonly seen email headers is trivially easy. It's one of the most frustrating oversights in the creation of Internet email technology -- though of course that's only obvious in hindsight; it was just fine for the pre-Internet networks of the late 1970s and early-mid 1980s. Since then, things have changed -- and the most interesting recent technological advancements in email have been in the realm of sender authentication, which encompasses ways to verify that the apparent sender of a message actually is the entity which sent it. ›››

By J.D. Falk | Comments: 3 | Views: 1047

Recent Comments — by J.D. Falk

Why is that first DEC spam always mentioned?  There wasn’t a straight line from Gary… Apr 25, 2008
You’re not the first to think of this. Jared Mauch’s NOC list was one of… Apr 08, 2008

Most Popular — by J.D. Falk

If It Spams Like a Duck…
Apr 11, 2008 | Comments: 1 | Views: 1,130
Trust in Email Begins with Authentication
Apr 02, 2008 | Comments: 3 | Views: 1,047