#!/bin/bash
echo "USE amavis;" >/etc/trim-amavis-msgs.sql
mysql -uamavis -pPassw0rd amavis -B -N -e "SELECT CONCAT('DELETE FROM msgs WHERE mail_id = ', CHAR(39), mail_id, CHAR(39), ' LIMIT 1;' ) FROM msgs WHERE time_iso < NOW() - INTERVAL 24 DAY;" >>/etc/trim-amavis-msgs.sql
mysql -uamavis -pPassw0rd </etc/trim-amavis-msgs.sql