Today i will try mail service of nethserver.
My Mail server is externally hosted
And I want to stay that way.
I have created a new domain, internal only for test test-mail.com
in primary domain myrealdomain.it ,Already in the list just install the mail service, i check box "Relay to another server" with ip of external mail server.
But in /var/log/messages i found
POP3 Connection from 192.168.1.28:51349
Jun 12 12:12:26 proxy p3scan: Real-server address is 192.168.0.254:110
Jun 12 12:12:26 proxy p3scan: ERR: Cannot connect to real-server: 192.168.0.254
Jun 12 12:12:26 proxy p3scan: Session done (Critical abort). Mails: 0 Bytes: 0
Instead of connecting to the external peer set in the relay, they connect to the local and obviously fail authentication.
Did I understand the meaning of that relay?
Or whether the name of the external and the internal domain coincide, does not it know where to place the mail?