Is your email being censored in the effort to fight spam?
One of the things I handle behind the scenes for TidBITS is bounce management: the tedium of figuring out which addresses should be removed from our various mailing lists due to delivery errors
Geoff's article "Email Filtering: Killing the Killer App" in TidBITS-637 struck some chords. Not surprisingly, the volume of messages to TidBITS Talk exploded, and I struggled to direct messages into appropriate threads