Since the update to version 14.x, the SEPPmail admin WebGUI displays the message:
“To ensure a database snapshot is done every day, an LFT partition is mandatory.”

Update from 20.02.2025: SEPPmail has recently added the steps to the official documentation which can be found here: https://docs.seppmail.com/de/09_ht_lft_datadisk_v14.html
To resolve this message, please proceed as follows:
- Create a new virtual harddisk with a minimum size of 30GB and attach it to your SEPPmail virtual appliance.
- Reboot your SEPPmail VM.
- Reboot your SEPPmail VM once again (second reboot) to finish the disk mounting.
- Check, if the message has disappeared.
Background Information
From version 14, a snapshot of the database is created every night, but only if the system has an LFT partition. This is done on all systems with a database. The snapshots can then be restored under Administration >> Backup >> Restore. A full snapshot is always taken on Sundays, and incremental snapshots are taken on the other days. The snapshots of the last 14 days are kept.
https://downloads.seppmail.com/extrelnotes/140/ERN14.0.html#database-backup:~:text=From%20version%2014,days%20are%20kept.
If the VM has no LFT partition, the red hint above is shown.