Does anyone know what the hell NNFMP is?
I recently had some spam that included the header line:
Received: from [18.104.22.168] by n36.grp.scd.yahoo.com with NNFMP; 16 Nov 2003 20:11:57 -0000
but I can’t work out what NNFMP is. Google searches seem to show it’s only Yahoo that use it, but there’s no RFC for it… so what is it?