Backups for the Xpress Send Hosted server are located in the "backup" share of the server.
Navigate to: \\XS Hostname\backup\ to see your backup files.
Backups will be stored for 10 days and then rotated out of the system. The backup job will run at midnight every night on the XS server. The most recent file is name "XS-Backup.rar". It is recommended that you backup the "XS-Hosted.rar" file daily with backup software or with a script. This file is encrypted and contains all data needed to restore XS from a fresh installation.