Subject: [spfbis] technically invalid netblocks in SPF Records

From: Tim Draegen <[email-masked]>
Date: Mon, 17 Dec 2012 21:52:20 -0500

Hi Group,

I recently added code to detect invalid netblock declarations, specifically if host bits are set.

This specific error happens *a lot*.  I'm curious to understand what this means, if anything, to the SPF stacks of the world.  I can't imagine there's much impact, but maybe there's just some background radiation of failures that happen due to this.

I'll likely expose this as a "Warning".  Any other guidance/insight would be much appreciated!

=- Tim