libmilter1 8.14.1-7ubuntu1 (amd64 binary) in ubuntu gutsy

 The Sendmail Mail Filter API (Milter) is designed to allow third-party
 programs access to mail messages as they are being processed in order
 to filter meta-information(headers) and content.
 .
 The Debian Sendmail package is built to support libmilter.
 .
 This package contains libmilter.so
 .
 Homepage: http://www.sendmail.org