Related links:
http://www.flatmtn.com/computer/Linux-Exim4.html
http://192.168.251.195/docs/exim-html-4.40/doc/html/
http://192.168.251.195/docs/exim-pdf-4.40/doc/
http://www.exim.org/exim-html-4.40/doc/html/spec_toc.html
http://www.exim.org/exim-html-4.40/doc/html/filter_toc.html