Blog of Anders Rune Jensen » spam http://people.iola.dk/arj metalinguistic musings and other related ramblings Fri, 18 Nov 2011 19:13:49 +0000 en hourly 1 http://wordpress.org/?v=3.2 Fighting spam in gmail http://people.iola.dk/arj/2009/12/16/fighting-spam-in-gmail/ http://people.iola.dk/arj/2009/12/16/fighting-spam-in-gmail/#comments Wed, 16 Dec 2009 15:25:51 +0000 Anders Rune Jensen http://people.iola.dk/arj/?p=410 Everyone hates spam, and like everyone else I get tons of it. So I’ve of course written about it two times before. Earlier this week we migrated over to a better email solution, so that we could get SPF working properly. SPF should help google figure out what is spam and what is not. In the process I went through all my old spam (all 4200 hundred of them) and found the following patterns to be  effective in cleaning my spam folder:

Matches: (Pfizer || replica || diploma || pharmacy || meds || pills || male enhancement || BuyCializ || http://www.nobelbarmoebelonline.com || http://www.nobelfahnenmitmast.com || http://www.nobelbarmoebel.com || Bestellseite || http://www.nobeltannenonline.com || http://www.nobelgewerbetools.com || health || Reinigungswirkung || britney spears || http://www.edelebarmoebel.com || http://www.edelefahnenmitmast.com || http://www.alumastmitfahnen.com || 성명 || 주식 || Проверки || Damen und Herren || и || видео || lv-bestbag || lv-bagshop || 밤세상)
Do this: Skip Inbox, Delete it

BIG FAT WARNING: This list is of course highly personal, and you should check how many in your inbox it matches, before installing it.

With this list in place I get about 10-15 spam a day and I can actually go through my spam box to look for false-positives. Sadly something that still happens way to often :-(

]]> http://people.iola.dk/arj/2009/12/16/fighting-spam-in-gmail/feed/ 0 How to stop wordpress spam http://people.iola.dk/arj/2008/02/27/how-to-stop-wordpress-spam/ http://people.iola.dk/arj/2008/02/27/how-to-stop-wordpress-spam/#comments Wed, 27 Feb 2008 18:41:33 +0000 Anders Rune Jensen http://people.iola.dk/arj/2008/02/27/how-to-stop-wordpress-spam/ We had trouble on the Nemo blog because some stinky casino spam overlord had found our nice little blog. Luckily the spam started of slow so I had a change to try different solutions to fight the problem. I went trough updating wordpress, to update Peter’s Custom Anti-Spam, to installing akismet, to try reCAPTCHA before I found the perfect solution WP hashcash. None of the other techniques got 100% of the spam. The wordpress plugin uses the clever hashcash technique (first proposed to fight email spam) implemented in javascript, to force a poster to pay a small amout of cpu time for each post. Supposedly though, the biggest effect just from requiring the client to have javascript installed in order to post ;-)

]]> http://people.iola.dk/arj/2008/02/27/how-to-stop-wordpress-spam/feed/ 0 How I learned not to care about spam http://people.iola.dk/arj/2006/08/21/how-i-learned-to-not-care-about-spam/ http://people.iola.dk/arj/2006/08/21/how-i-learned-to-not-care-about-spam/#comments Mon, 21 Aug 2006 20:05:23 +0000 Anders Rune Jensen http://www.gnulinux.dk/arj/?p=68 So about a year ago I was starting to get a lot of spam so I tried different techniques to combat the problem. Long story short, the solution I found to be the most effective was simply to use bogofilter. After using it for about a year without any retraining I finally had to retrain my filter as there was 2-3 specific kinds of mails it kept misclassifying as non-spam. During that period only 100-200 spam mails had been registered as legitimate mail and 45000 spam mails had been correctly classified. I stopped checking for real mails classified as spam after about 2 weeks of no false positives. That’s pretty damn impressive. All hail bogofilter :)

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