mailfoot: 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/mailfoot - from package: dbacl

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

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