Top choice mail server for Ubuntu is Postfix with Dovecot or Sendmail.
Top choice mail server for Ubuntu is Postfix with Dovecot or Sendmail.
I’ve shared my findings after nearly a year of work. Here are the threads I created for solutions. My latest update is here: https://mailcow.email/ It functions smoothly in Docker, is straightforward to configure, offers a pleasant interface, and supports multiple domains. Overall, 10 out of 10 experience!
For more sophisticated options, consider zimbra https://www.zimbra.com/