This recommended update of postgrey provides version 1.35 (boo#919194) with various fixes and improvements:

- Build as noarch since there are now architecture dependend components
- Don't install init scripts when systemd is used
- Create rcpostgrey also when systemd is used
- Remove condition for suggesting cron since all current releases already have cron
- use just 'postgrey' as process name, instead of '/usr/sbin/postgrey', because Linux tools are limited to 15 characters
- Make postgrey work with Perl 5.18
- updated whitelist