milter manager is a milter to use multiple milters effectively.
If milter manager is introduced, milter manager administrates milters instead of MTA. The has some advantages:
A bug fix release of 1.8.8.
* [rpm] Update Ruby1.9.3 package for CentOS6 to Ruby1.9.3-p448
released on 2013-06-27
=== milter manager
* [binding][ruby] Fixed a bug that milter-manager couldn't detect
socket path if greylist.conf includes socket path with