Why I hate RBLs
I hate real-time block lists (RBLs). I really do. I don’t think there is an administrator or a PC technician that hasn’t cussed them out at one time or another.
RBLs are a crude but simple tool invented to help reduce e-mail spam. Essentially, an RBL is a roster of DNS domains, fully qualified host names, or IP addresses that have been known to send large quantities of spam. RBL-enabled defense tools can implement RBLs and use them to reject e-mail from any computer or sender on the list.
[ Read more ]
By subscribing to our early morning news update, you will receive a daily digest of the latest security news published on Help Net Security.
With over 500 issues so far, reading our newsletter every Monday morning will keep you up-to-date with security risks out there.