pkg://postfix-dev_2.2.4-1_all.deb:108048/control  downloads

Package: postfix-dev
Version: 2.2.4-1
Section: devel
Priority: extra
Architecture: all
Depends: postfix (>= 2.2.4-0), postfix (<< 2.2.4.0-0)
Installed-Size: 1072
Maintainer: LaMont Jones <lamont@debian.org>
Source: postfix
Description: Postfix loadable modules development environment
 Postfix is Wietse Venema's mail transport agent that started life as an
 alternative to the widely-used Sendmail program.  Postfix attempts to
 be fast, easy to administer, and secure, while at the same time being
 sendmail compatible enough to not upset existing users. Thus, the outside
 has a sendmail-ish flavor, but the inside is completely different.
 .
 This provides the headers and library links to build additional map
 types for Postfix.  If you're not developing postfix modules, then you
 do not need this.