sync_reset: 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/lib/cyrus/bin/sync_reset - from package: cyrus-replication

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

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