I’m new to postfix. I planning to setup a mail server on ubuntu server 20.04 LTS.
I follow this guide: https://www.linuxbabe.com/mail-server/setup-basic-postfix-mail-sever-ubuntu
Everything is working well, I managed to send and receive mail.
But one thing strange is when I send mail to my gmail account, it show the recipient email address with [email protected] instead of [email protected].
Why will this happen? What configuration am I missed and what should I check?