Installing KumoMTA

Pre-built repos are available for supported Operating Systems, making installation straightforward.

The following example is for installation on Rocky Linux, for other distros see this page of the User Guide.

sudo dnf -y install dnf-plugins-core
sudo dnf config-manager \
    --add-repo \
    https://openrepo.kumomta.com/files/kumomta-rocky.repo
sudo yum install kumomta

This installs the KumoMTA daemon to /opt/kumomta/sbin/kumod

Note

Alternatively you can install the kumomta-dev package in order to take advantage of the latest pre-release features. This is only recommended for testing environments.

KumoMTA is now installed with a basic policy that allows relay from localhost, but it will need a more granular configuration policy for production use.

Proceed to the Configuring KumoMTA section for more details.