Fetchmail nicht lauft

Could not fulfill the request.

Server error message:

Restarting the service fetchmail failed:
● fetchmail.service - LSB: init-Script for system wide fetchmail daemon
Loaded: loaded (/etc/init.d/fetchmail; generated; vendor preset: enabled)
Active: failed (Result: exit-code) since Tue 2019-09-10 12:31:27 CEST; 39ms ago
Docs: man:systemd-sysv-generator(8)
Process: 7563 ExecStop=/etc/init.d/fetchmail stop (code=exited, status=0/SUCCESS)
Process: 30292 ExecStart=/etc/init.d/fetchmail start (code=exited, status=1/FAILURE)
CPU: 43ms

Sep 10 12:31:27 xo-test systemd[1]: Starting LSB: init-Script for system wide fetchmail daemon…
Sep 10 12:31:27 xo-test fetchmail[30292]: Starting mail retriever agent: fetchmailfetchmail: es wurden keine Mailserver spezifiziert.
Sep 10 12:31:27 xo-test fetchmail[30292]: failed!
Sep 10 12:31:27 xo-test systemd[1]: fetchmail.service: Control process exited, code=exited status=1
Sep 10 12:31:27 xo-test systemd[1]: Failed to start LSB: init-Script for system wide fetchmail daemon.
Sep 10 12:31:27 xo-test systemd[1]: fetchmail.service: Unit entered failed state.
Sep 10 12:31:27 xo-test systemd[1]: fetchmail.service: Failed with result ‘exit-code’.