This seems to be enabled by default in 4.86RC.
http://git.exim.org/exim.git/commit/01a4a5c5cbaa40ca618d3e233991ce183b551477
This seems to be enabled by default in 4.86RC.
http:// git.exim. org/exim. git/commit/ 01a4a5c5cbaa40c a618d3e233991ce 183b551477