I had set up a small vps using cyberpanel, done configure the necessary setting include rdns.
unfortunately, when I send a test to mail-tester.com, I see this server.example.com, which I had no clue where to amend.
(I don't remember I had configured such URL during my installation 🤔)
Anyone can point me some direction?
screenshot here: https://ibb.co/dJ21Jsr