> As people have pointed out, some of the commercial MLMs do Message-ID and
> checksum storage to prevent these problems. Someone mentioned Listproc,
> but from their message it sounds like they meant the old 6.0c version.
> The commercial version, 7.X, correctly stores the checksums of the body
> of the message, stripping the headers, exactly as suggested. I'm pretty
> certain that that would have elegantly prevented your situation.
As I mentioned in my previous post, *ALL* listproc versions stip headers and
white spaces before computing the checksum...