Let’s have a look at one of my favorite topics today: E-Mail Spamfilters. They are a quite helpful tool for keeping the inbox clean as long as you don’t fully trust their work. I know this sounds paradox, but what happens if they eat a message you wanted to keep? What if they don’t kill a spam mail […]
Tag: spam
Untrained Spamfilter Blues
I migrated my mailserver a few hours ago to a complete new system to have a better groupware solution and less noise. But honestly, I am already missing the old patchwork system as its spamfilter was working very very very… efficient. As the new anti spam system didn’t have that much training, the detection rate is simply crap. […]
Is WP-Blackcheck effective?
That was the basic question of the research I did during the last days, greping through the logs to find some info to get an impression of the blacklists effect. Now I know, it isn’t in vain. If we’d say we have 10000 requests we would get about: 9000 Spam Comments 1000 Ham Comments 100 Reports
Spam or Virus?
Today I had one of those typical spam malware in my mailbox, showing that Microsoft Outlook is one of the most widely used mail programs, being attacked all the time: Microsoft Outlook Notification for the xxxx@xxxx.xx Support [xxxx@xxxx.xx] Sent :Thu 15/10/2009 06:38 To xxxx@xxxx.xx Attachment install.zip (12kb) You have (6) New Message from Outlook Microsoft – Please re-configure […]
The blacklist again…
It is wonderful if you know that a plan is working – especially if it’s your own one. Regarding the WP-Blackcheck plugin, it might even fot more here as I was observing less and less spam comments into the moderation queues of the sites I manage. To get some numbers I tried to deactivate a number of other […]
Is it me John Wayne, is it you?
Some spammers can really drive you mad – especially if they are doing things like that. Looking at my mailserver logs I have found some strange IP addresses like 123.27.3.81, 222.252.80.188 or 123.16.13.188 which are resolving to ‘localhost’ regarding to their reverse DNS. In other words, a bad configured mailserver thinks that the mail comes from itself and […]