makesmtpaccess: command not found

Have You tried accessing the binary with the full path?

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/makesmtpaccess - from package: courier-mta

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