Now stop using blacklisting: it’s offline

Mattias Geniar, Friday, August 10, 2012

It seems a lot of Blacklist filters still use the old DSBL DNS Blacklist, but it's been dead for few years already. Since March 2009, to be exact. However, something changed in the last 24 hours that actually made them go offline.

The result is that any system still using that blacklist sends out bounce messages such as this.

The following recipient(s) cannot be reached: xxx
Service unavailable; Client host [x.x.x.x] blocked using

If you still have legacy systems running that use the blacklist, you may want to remove any references to the DSBL in your configs and stop using that blacklist.

Hi! My name is Mattias Geniar. I'm a Support Manager at Nucleus Hosting in Belgium, a general web geek, public speaker and podcaster. If you're interested in keeping up with me, have a look at my podcast and weekly newsletter below. For more updates, follow me on Twitter as @mattiasgeniar.

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