domainsse: 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/domainsse - from package: embassy-domainatrix

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

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