The requirements will depend on your host, I can't tell you what they might be.
With some hosts, you will be able to use the standard mail object, and won't need to enter anything for the SMTP Server, or port, with other hosts, you may need to enter the SMTP Server address and port number, and still others may not support the mail protocol at all and require that you use the Pera Mail for SMTP mail object.
I can't tell what the needed settings are for your host, only your host can tell you that.