PREIN
/bin/sh
/usr/share/rpm-helper/add-user postgrey $1 postgrey /var/lib/postgrey /bin/false
PREUN
/bin/sh
/usr/share/rpm-helper/del-service postgrey $1 postgrey
POSTIN
/bin/sh
/usr/share/rpm-helper/add-service postgrey $1 postgrey
POSTUN
/bin/sh
/usr/share/rpm-helper/del-user postgrey $1 postgrey