addcr: 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/addcr - from package: courier-mta
/usr/bin/addcr - from package: ucspi-tcp-ipv6
/usr/bin/addcr - from package: ucspi-tcp

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

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