problem in backup

Hi everybody. I com with a new probleme. Backup seems to be ok but i receive this mail

Backup failed! See the progress output above for the reason why. Total backup time was 06 minutes, 56 seconds.

Sent by Virtualmin at: https://sd-xxxx.dedibox.fr:10000

Creating backup for virtual server signature.forum-ecigarette.com ..

Copying virtual server configuration ..
.. done

Backing up Cron jobs ..
.. none defined.

Creating TAR file of home directory ..
.. done

Copying records in DNS domain ..
.. done

Saving mail aliases ..
.. done

Saving mail and FTP users ..
.. done

Backing up mail and FTP user Cron jobs ..
.. none to backup

Copying Apache virtual host configuration ..
.. done

Copying Apache log files ..
.. done

Copying Webalizer configuration files ..
.. done

Copying Logrotate configuration ..
.. done

Dumping MySQL database signature ..
.. done

Backing up Webmin ACL files ..
.. done

Backing up DAV users file ..
.. done

Backing up AWstats configuration file ..
.. done

Creating backup for virtual server forum-ecigarette.com ..

Copying virtual server configuration ..
.. done

Backing up Cron jobs ..
.. none defined.

Creating TAR file of home directory ..
.. done

Copying records in DNS domain ..
.. done

Saving mail aliases ..
.. done

Saving mail and FTP users ..
.. done

Backing up mail and FTP user Cron jobs ..
.. none to backup

Copying Apache virtual host configuration ..
.. done

Copying Apache log files ..
.. done

Copying Webalizer configuration files ..
.. done

Copying Logrotate configuration ..
.. done

Dumping MySQL database forum_ecigarette ..
.. done

Dumping MySQL database forum_ecigarette_roundcube ..
.. done

Copying ProFTPd virtual server configuration ..
.. done

Copying Procmail and SpamAssassin configuration files ..
.. done

Backing up Webmin ACL files ..
.. done

Backing up DAV users file ..
.. done

Backing up AWstats configuration file ..
.. done

Creating backup of Mailman mailing lists ..
.. no lists found

Creating backup for virtual server musee-ecigarette.com ..

Copying virtual server configuration ..
.. done

Backing up Cron jobs ..
.. none defined.

Creating TAR file of home directory ..
.. done

Copying records in DNS domain ..
.. done

Saving mail aliases ..
.. done

Saving mail and FTP users ..
.. done

Backing up mail and FTP user Cron jobs ..
.. none to backup

Copying Apache virtual host configuration ..
.. done

Copying Apache log files ..
.. done

Copying Webalizer configuration files ..
.. done

Copying Logrotate configuration ..
.. done

Dumping MySQL database musee_ecigarette ..
.. done

Copying Procmail and SpamAssassin configuration files ..
.. done

Backing up Webmin ACL files ..
.. done

Backing up DAV users file ..
.. done

Backing up AWstats configuration file ..
.. done

Creating backup of Mailman mailing lists ..
.. no lists found

Creating final backup archives in directory .. .. done

Uploading archive to FTP server dedibackup-vit.online.net .. .. done

3 servers backed up successfully, 0 had errors.

Deleting backups older than 5 days .. .. failed to list FTP directory : Failed to connect to 88.190.254.201:10350 : Connection timed out

How can i change that. Thanks