On Mon, 13 Jun 2022 16:56:24 -0400 "Paul M. Foster via arch-general" <arch-general@lists.archlinux.org> wrote:

Folks:

I'm attempting to use popa3d to handle POP3 on my box for my home network. The authors assume you will be running an init.d system, but obviously, I'm running systemd. Does anyone know how to set this up with systemd so it will run without simply terminating. I've set up a system user called "popa3d" to satisfy a getpwnam() error generated by systemd, and I have a service file as follows:

[Unit] Description=POP3 Daemon [Service] ExecStart=/usr/sbin/popa3d -D User=root [Install] WantedBy=multi-user.target

Any help would be appreciated.

Paul

When not specifying a Type= in your .service file, systemd will use the 'simple' type, which assumes that the process keeps running in the foreground. If you want systemd to handle a daemon that forks into the background, use Type=forking. This isn't recommended tho, since systemd will have to guess which the main process of the service is. A better way is to run your daemon in a non-forking manner. I'm not familiar with popa3d, but from the manpage, it seems like omitting '-D' from the command line should accomplish that. For specifics about how to write systemd service files, read systemd.service(5)