postinst is in mailman-api 0.2.9-1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | #!/bin/sh
set -e
# Automatically added by dhpython:
if which pycompile >/dev/null 2>&1; then
	pycompile -p mailman-api 
fi
# End automatically added section
# Automatically added by dh_installinit
if [ -x "/etc/init.d/mailman-api" ]; then
	update-rc.d mailman-api defaults >/dev/null
	invoke-rc.d mailman-api start || exit $?
fi
# End automatically added section
 |