bhm: 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/bhm - from package: postal

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

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