Mail Server behing mikrotik and SMTP port forwarding

RouterOS Forwarding Protocols
1

Hello!
any body please help me regarding my email server that is behind mikrotik

my public ip is :- 117.102.19.252

local ip:- 202.125.125.139 ( this is my email server ip )


i am unable to send or receive mail from my mail server

i added Dst port ( i already bind my public and local ip )

dstnat dst-address=117.102.19.252 . dst-port 0-65535 , dst-nat to address = 202.125.125.139 to ports 0-65539
pleaseeeeeeeeeeeeeeeee help me

2

check if port 25 is blocked on ur MT firewall filter

/ip firewall filter print

copypaste here

3

202.125.125.139 is public address. Why you use dst-nat?

4

202.125.125.139 seems a public ip.

with service like smtp, pop, http i will asign to each machine a single public ip instead of doing dst-nat. I suggest you tu buy a public /29