Just installed HestiaCP on an Ubuntu 24.04 server.
Server’s hostname is staging.domain.tld but my external mail domain is domain.tld.
If I try to send email from HestiaCP host, emails are being sent as [email protected]
However, a new problem came out… my server is sending outbound email directly to the Internet without going through my provider’s mail servers, that means my messages don’t get signed by the domain DKIM keys….
So, in this case I would need to use the relay host option instead!