The Sendmail Content Management API (Milter) is designed to allow third-party programs access to mail messages as they are being processed in order to filter meta-information and content. It includes the milter shared library.
acquired package info from repodata DB: repodata/21886cccbebfef01fd8c9ffbdf136561ce8b50eb1d8516669acd0fe126920766-primary.sqlite.bz2
Sendmail milter development libraries and headers
Include development libraries and headers for the milter add-ons as part of sendmail.