V8.12 sendmail contained the germ of many
possible future enhancements (_FFR
sections),
which, in practice, proved very useful. In order to make those
enhancements available for use, many of the _FFR
sections have been converted into release code and have been folded
into the new, officially supported release of V8.13. During that
process, new spam techniques were detected, and support for rejecting
that spam was also added.
3.238.5.144