spamass-milter correct reject parameter

    is the correct reject parameter in upper or lower case?

    Code
    1. ## /etc/default/spamass-milter
    2. OPTIONS="-e localhost -f -u spamass-milter -r 8 -- --socket=/var/run/spamassassin.sock"
    3. or
    4. OPTIONS="-e localhost -f -u spamass-milter -R 8 -- --socket=/var/run/spamassassin.sock"


    - IMSCP: 1.5.3

    - Distribution: Debian 9

    - Proftpd

    - PHP FPM

    - MariaDB 10.1

    - Dovecot

    - Roundcube

    - Web2FTP

    - Plugins:

    PMA Captcha, RoundCubePlugins, SpamAssassin , LetsEncrypt, PHPswitcher, ClamAV