We need:
Exim latest (4.77 / 4.80) to support DomainKeys, DKIM and SPF signout.
Solution must be implemented in exim’s source code, so it can be compiled and deployed anywhere we need.
Developer must deliver detailed explantions on how to replicate build up and any thing that will be needed to have it done.
Solution must be able to be compiled on any Unix/FreeBSD distro.
