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.
Encryption and Authentication
The IMAP Proxy service only supports PLAIN authentication, which is why it is recommended that StartTLS or SSL are used for encrypting the connection. The authentication can be performed on the IMAP proxy or on the back end server.Error Control
To protect the server the number of failed/wrong commands, received from POP3 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 POP3 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.Back-end Server Connection Settings
In this section, you can allow a connection timeout to be set, specify the maximum number of connections between IMAP Proxy and the back-end Server, another local network interface IP address to be used for connections with the back-end server and whether or not to use SSL to connect to the back-end server.For more details on how to configure IMAP Proxy parameters using WebAdmin see IMAP Proxy Tab.