mailping-store: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/mailping-store - from package: mailping

You may install the required package with command apt-get install {package}

Error in other languages:
mailping-store: bevel nie gevind nie
mailping-store: comandă negăsită
mailping-store: comando não encontrado
mailping-store: commande introuvable
mailping-store: command not found
mailping-store: käsku ei ole
mailping-store: không tìm thấy lệnh
mailping-store: komanda nerasta
mailping-store: Kommando nicht gefunden.
mailping-store: kommandot finns inte
mailping-store: komut yok
mailping-store: nie znaleziono polecenia
mailping-store: níor aimsíodh an t-ordú
mailping-store: no se encontró la orden
mailping-store: no s'ha trobat l'ordre
mailping-store: opdracht niet gevonden
mailping-store: parancs nem található
mailping-store: perintah tidak ditemukan
mailping-store: príkaz nenájdený
mailping-store: příkaz nenalezen
mailping-store: команда не найдена
mailping-store: командата не е открита
mailping-store: 命令找不到
mailping-store: コマンドが見つかりません