Topic: Send-only account with incoming mail disabled
I successfully installed iRedMail 1.3.2 on an Ubuntu 20.04 LXD container with MySQL backend and use it for my 3 home domains including Letsencrypt certificates. Works like a charm, better than the external email hosting I used before.
Now I also have other servers (Nextcloud, etc), which I would like to send email from their own address (e.g. firstname.lastname@example.org). So I made a separate mail user with password for that and configured it in Nextcloud as the SMTP server, that works. However, these are send-only email addresses, so incoming mail should preferably be rejected. Can I configure iRedMail to do that?