amavis-services: 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/sbin/amavis-services - from package: amavisd-new

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

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