If I have an existing email, for example hello@gmail.com, and I view these configuration files:
/etc/mail/access.sample - I did not change anything here 'cause I think it's default settings and I don't need to update it.
/etc/mail/aliases - In this file beside root by default here are "me@my.domain" so here i need to change it to "hello@gmal.com" or something different (maybe localuser ) ?
/etc/mail/local-host-names I don't have this file, but in the same directory (/etc/mail/) here is freebsd.mc file with some text about 'SMART_HOST', your.isp.mail.server' . So maybe here is the place where I need to change it to my existing email?
And the main file /etc/mail/sendmail.cf really don't understand how to update it and and where exactly i need to write my existing information, so I ask here ;/