virtual ip disable port forward?

[miguel.mirandag]

Hi, i am configuring an opnsense firewall 19.7, i configured several port forwards without creating virtual ips, now i need to configured my mail server so the outgoing ip addrress is the same as the mx record configured in dns. I did it writing the static ip in outgoing nat, so the emails go outside using this ip address instead of the wan interface address, then i read somewhere that it is best to do this using virtual ip, so i created a virtaul ip, modified the outgoing nat rule, now the port forwards does not work anymore, i had to rollback the configuration so my customers can send and receive emails again, what can i check ? or it is by desing that this works this way'