Progressive Robot's fork of hMailServer, not the original by Martin Knafve, which is developed separately and has releases of its own. The fork's home is https://gitlab.com/hmailserver/hmailserver.
hMailServer is a mail server: SMTP in and out, IMAP and POP3, with spam and virus checks, DKIM, SPF, DMARC and ARC, and its administration over a REST API and the Control Deck page that API serves. It keeps its accounts and settings in a PostgreSQL or MariaDB/MySQL database of yours, reached over the network, and its messages under /var/snap/hmailserver/common.
After installing, point it at its database and start it:
sudo snap set hmailserver db.type=postgresql db.host=192.0.2.10 \
db.name=hmailserver db.user=hmailserver
printf '%s\n' 'the database password' | sudo hmailserver.set-database-password
sudo snap start --enable hmailserver.daemon
The documentation: https://gitlab.com/hmailserver/hmailserver/-/blob/master/hmailserver/docs/Snap.md
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snap is available for Red Hat Enterprise Linux (RHEL) 8 and RHEL 7, from the 7.6 release onward.
The packages for RHEL 7, RHEL 8, and RHEL 9 are in each distribution’s respective Extra Packages for Enterprise Linux (EPEL) repository. The instructions for adding this repository diverge slightly between RHEL 7, RHEL 8 and RHEL 9, which is why they’re listed separately below.
The EPEL repository can be added to RHEL 9 with the following command:
sudo dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm
sudo dnf upgrade
The EPEL repository can be added to RHEL 8 with the following command:
sudo dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
sudo dnf upgrade
The EPEL repository can be added to RHEL 7 with the following command:
sudo rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
Adding the optional and extras repositories is also recommended:
sudo subscription-manager repos --enable "rhel-*-optional-rpms" --enable "rhel-*-extras-rpms"
sudo yum update
Snap can now be installed as follows:
sudo yum install snapd
Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:
sudo systemctl enable --now snapd.socket
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:
sudo ln -s /var/lib/snapd/snap /snap
Either log out and back in again or restart your system to ensure snap’s paths are updated correctly.
To install hMailServer (Progressive Robot's fork), simply use the following command:
sudo snap install hmailserver
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.