Most ISP’s and network providers have specific email addresses that you can report abuse to. These addresses can be looked up using a whois tool. Recently, I’ve noticed a number of those addresses that just don’t work the way they are supposed to.
Category Archive: Spam
Nov 15 2012
Adding Envelope Sender in sendmail
Fair warning: This post is pretty darn technical and is of little interest to people who don’t muck around with Linux and/or mail servers. Recently I had a problem with someone on a midrange.com mailing list where they sent obvious spam. The problem was, they were a subscriber to the list and had posted before …
Oct 25 2012
Blocking Mailbait
Recently I’ve been getting a lot of mail from the feedback loops I subscribe to indicating that someone has gotten a subscription confirmation message and they considered it spam. After digging into my logs I noticed a few things … The subscription requests are being initiated from TOR exit nodes. The web requests that initiate …
Jul 16 2011
DKIM Rule – SpamAssassin
I put together a new SpamAssassin rule that will help identify spam from spoofed email addresses. Some email providers always sign email with DKIM or DomainKeys … based on this assumption, if you get a message from one of those domains and it isn’t signed, you can assume its more likely to be spam. This …
Apr 05 2011
Epsilon
By now everyone’s probably heard about the data breach at Epsilon … which resulted in a lot of major eCommerce vendors customers mailing list getting stolen. Personally, I’ve gotten notifications from Chase, Walgreen, Tivo, Best Buy, 1-800-Flowers, and a few others … informing me of the breach and assuring me that no critical information was …
Jan 05 2011
Spam Retaliation
I’ve got a slightly new policy when it comes to spam. If given the option, I’m going to change my email address in the spammers database to spam@uce.gov. So the next time the spammer tries to send ME junk, they will be reporting themselves to the Federal Trade Commission. Yeah, I know, it won’t do …
Mar 21 2010
Reporting Spam No More
May 10 2009
Yahoo Abuse Feedback Loop
A few days ago I discovered that Yahoo had created a email abuse feedback loop system. Based on my experiences with AOL’s feedback system, I really didn’t have high hopes for Yahoo’s efforts … but decided to give it a shot anyways. I signed up to get abuse reports for midrange.com messages. It took …
Dec 14 2008
Spam Poison
I’ve never understood the rationale behind the various web scripts that claim that they are ‘poisoning’ spammers lists. They claim that, by putting a bunch of garbage email addresses on a web page and encouraging spammers to harvest the page, they are poisoning a spammers email list and thus making the list useless so …

Jun 05 2010
Spam Observations
Spam
I’ve noticed an interesting trend in the comment spam I’ve been getting (luckily few of it gets through). There seems to be three basic categories …
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Tags: comments, email, google apps, Spam
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