printforward: 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/printforward - from package: fastforward
/var/lib/qmail/bin/printforward - from package: fastforward

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

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