mailutime: 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/mailutime - from package: namazu2-index-tools

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

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