Provided by: postfix-gld_1.7-7build1_amd64
gld - GreyListing Daemon for postfix
gld [-c <n>|-h|-v]
gld is a policy daemon for postfix 2.1 or higher. It's written in C and uses MySQL for the database stuff.
-c clean the database for entries older than <n> days -v display version -h display Usage
/etc/gld.conf Configuration file.
Please read /usr/share/doc/postfix-gld/README.Debian. June 2004 GLD(8)