The exim policy module's fc uses paths of the form /usr/sbin/exim, /var/spool/exim, and similar. Debian installs its Exim files in a major-version-specific path, such as /var/spool/exim4.
This patch adjusts that to tolerate a trailing version number. I didn't make this distro-conditional, since it seems safe for all distros and there may be others using the same convention. It also adds a missing backslash on the PID path.
===================================================================
--- exim.fc (revision 2596)
+++ exim.fc (working copy)
@@ -1,4 +1,4 @@
-/usr/sbin/exim -- gen_context(system_u:object_r:exim_exec_t,s0)
-/var/log/exim(/.*)? gen_context(system_u:object_r:exim_log_t,s0)
-/var/run/exim.pid -- gen_context(system_u:object_r:exim_var_run_t,s0)
-/var/spool/exim(/.*)? gen_context(system_u:object_r:exim_spool_t,s0)
+/usr/sbin/exim[0-9]? -- gen_context(system_u:object_r:exim_exec_t,s0)
+/var/log/exim[0-9]?(/.*)? gen_context(system_u:object_r:exim_log_t,s0)
+/var/run/exim[0-9]?\.pid -- gen_context(system_u:object_r:exim_var_run_t,s0)
+/var/spool/exim[0-9]?(/.*)? gen_context(system_u:object_r:exim_spool_t,s0)