[Mimedefang] Negative addresses??

[Fred]

Kelson wrote:
> If I were to guess, someone has spamwarethat's generating random
> numbers for fake IP addresses, but has an error in formatting, so
> they're getting displayed as negative integers instead of dotted
> quads.

Me and a few friends have been watching this pattern too, we found out it's
not a very reliable spam sign as some companies name their computers after
an asset number and we are seeing common uses of this pattern in mail coming
from all over the place.