Tag: Anti-spam techniques

Back to Basics: Where does Spamhaus get off…

One of the more popular questions that come up deals with the use of DNSBLs[1] , especially Spamhaus’ lists, by ISPs[2] . The question usually goes something like this: Who are the operators of that list and what gives them the right to regulate commerce? Are they run by a government or something? A Brief History… Read More

Don’t opt-out of spam?

  Yesterday, Laura Atkins wrote a blog post which suggests that unsubscribing from spam doesn’t result in receiving more spam. I know that this is a project that she’s been working on for at least a month, and I don’t have any reason to doubt her results. [1] Interestingly, this morning there was a new post by Brian… Read More

Filters are stupid

Sometimes it bears remembering that many content filters aren’t score-based, but rather string based. Because of this, you may have to more carefully craft your messages to deal with the fact that the filter cannot take context into account. And so, today I wish to share with you three different strings actually seen to have… Read More