Hello I am a beginner and I have just discovered haproxy

Hello I am a beginner and I have just discovered haproxy.

I would like to configure my haproxy for a reverse proxy that will manage my mail server but I don’t know if my config is correct

frontend http-in
bind 172.16.100.250:80
mode http
option httplog
use_backend backend1

backend backend1
mode http
server mail 10.10.60.250:80

ps:-172.16.100.250:80 (haproxy)
-10.10.60.250:80(email)

Can you help me on my config?