By default Exim puts its main log to /var/log/exim/exim_main.log, but many software like logwatch, munin expect log in /var/log/exim/main.log. Also in many distributions like Debian, Ubuntu, Fedore Core, FreeBSD /var/log/exim/main.log path is used.
Developer of Exim does not recommend change main log path in config file. Is there any reason to use /var/log/exim/exim_main.log? Maybe it worth to change path to /var/log/exim/main.log ? -- Sergey

