splogger: 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

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/splogger - from package: qmail
/var/lib/qmail/bin/splogger - from package: qmail

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