AXIGEN Mail Server provides a FTP backup/restore service meant to enable regular backup operations for your entire domain and user configuration. This service is based on FTP (File Transfer Protocol, standard RFC 959).

The FTP Backup service allows using any FTP client (including standard Web browsers) in order to connect to the backup machine using the admin username and password. You can replicate the entire domain and user (accounts, lists forwarders, folder recipients) folder structure on the backup machine. The FTP service generates a virtual structure, from which you can retrieve files whenever you need them.

The directory structure created by the FTP service is similar to the one given below:

/ domains -> domains root director
    |-example.org -> domain name directory
        |-domainRegistry.bin -> domain config file (binary)
        |-domainCoreConfig.cfg -> domain config file (text)
    |-users -> users root directory
        |-postmaster -> user directory
            |-Registry.bin -> user config file (binary)
            |-CoreConfig.cfg -> user config file (text)
            |-folders -> user folders root directory
            |-INBOX -> user folder
            |-... -> other user folders
    |-maillists -> maillists root directory
        |-... -> same folder structure as for `users
    |-forwarders -> forwarders root directory
        |-... -> same folder structure as for `users'
    |-publicFolder -> domain public folder root

Listeners

Listeners can be defined and managed to add extra flexibility and configurability to this service. For that, global access limitations, SSL Settings and access lists can be enforced on the address used by this service for binding.

Access Control

Access rules allow you to control connection to this service by defining simple access lists for specific Networks / IP Ranges / IP’s. Service level access rules are automatically applied to all its listeners and will override for this service any existing Global Access rules.

Flow Control

Flow control parameters can be adjusted to fine tune the server’s performance and avoid overloading it. Global access limitations to this listener can be enforced by setting the total number of simultaneous connections, concurrent connections from each remote IP address, number of new connections to the listener made in a time period interval, number of total connections from each remote IP address on a time interval period. The default interval for this time period is set to 1 minute.

Logging

All AXIGEN main services can log different types of events. The system administrator can specify what events are logged, where and how they are logged.

See Logging service for more details on logging in AXIGEN.

Error Control

To protect the server the number of failed/wrong commands, received from FTP clients during one session, can be limited. When these limits are exceeded, incomplete connections or connections that are not RFC compliant will be dropped thus freeing important bandwidth.

Important! If you do not specify a limit for the maximum number of (authentication) errors allowed for a FTP client's session, security risks may arise.

Thread Management

AXIGEN Mail Server is designed to run on different machine configurations and operating systems, on networks with various traffic loads, structures, domain configurations, user rights etc. That is why, depending on all these variables, you can adapt the workload to the server’s processing power to improve its performance or avoid overload by setting the minimum and maximum number of threads that can be opened at a specific moment of time.

For more details on how to configure FTP Backup parameters using WebAdmin see Backup and Restore Tab.