How to Block port 25

RouterOS General
1

Hi,

I want to block port 25 on my router and want to allow only few IP/IP-pools to access port 25. Can anyone give me a small example.

Thanks,
Srinivas

2 
/ip firewall address-list
add list=smtp-whitelist address=192.0.2.1

/ip firewall filter
add chain=forward action=accept dst-port=25 src-address-list=smtp-whitelist
add chain=forward action=drop dst-port=25
3

Hi,

May i know how can i block multiple port but i would like to whitelist some countries to access the port

Please help. TQ