Over the past few days we seem to have attracted a number of "charming" clients who must think we are mentally defective. … [Read more...] about Phishing Domains
Spam Filtering
Linux Email for the part-time sysadmin
A lot of small to medium sized businesses do not have dedicated IT staff. They may outsource to an IT services company, but more often than not somebody is "elected" as the resident "IT expert" as they know slightly more than their colleagues. … [Read more...] about Linux Email for the part-time sysadmin
What is a blacklist? Dispelling the myths
One of the most common issues faced by server admins is spam. If you are not concerned about protecting your users from receiving it, you are probably worried about your users sending it (intentionally or otherwise). … [Read more...] about What is a blacklist? Dispelling the myths
DOS Vulnerability in Spam Assassin
According to Secunia there is a vulnerability in SpamAssassin 3.04 and may also affect older versions. Solution - upgrade to the latest version I wonder how this will affect companies using derived products ..... … [Read more...] about DOS Vulnerability in Spam Assassin
Why Challenge / Response Is not a Good Idea
If you read my ramblings on a regular basis you may have noticed that spam filtering is an area that I take a particular interest in. Although I may dislike spammers I hold certain anti-spam "solutions" in equal disdain. … [Read more...] about Why Challenge / Response Is not a Good Idea