Undelivered Address Not Found issue with Mail server

[mark_nl (Mark Verlinde)]

Sorry, people try hard to help you…
Al you say: > yes all set, but is does not work <

Please give all specific answers to the questions!

@michelandre

In Cockpit → Applications → Email → Settings → Domains :
What is the domain name you are using ?

@michelandre

Edit the domain name:
Destination is set to: Deliver locally or Relay to another server ?

@transocean

Open port 25 and test it, please.