I have installed WordPress (Nginx), but unable to get password or reset mails!

I have installed WordPress (LEMP) setup. For WordPress mails like new user registration, password resets, I installed postfix (no conf edits, everything is default as installed), but that didn’t work for me.

This is my first experience in Fedora Linux, coming from Debian. In Debian, postfix installation has a configuration wizard, but in a fedora was there. Just guide me on what to do after installation.

I’m using a digital ocean droplet of fedora 32.