Abstract: The disclosure relates to ensuring wanted electronic messages are reliably delivered to recipients by distinguishing between wanted, authenticated messages and other messages. Notifications of messages that have been identified as spam are received (60) by a messaging recovery engine (30). The engine (30) via recovery module (44) determines (62) whether the email is in fact spam and if it is not spam generates (64) a notification to this effect, such as storing details in a database (34) or by generating instructions (48) to have the message delivered. The advantage is that after-the-fact analysis of security screened electronic messages can be performed. This makes it possible to use the method disclosed with existing messaging security systems with little or no modification to those existing systems.

Abstract: The disclosure relates to ensuring wanted electronic messages are reliably delivered to recipients by distinguishing between wanted, authenticated messages and other messages. Also, it provides for automatically compiling a datastore with senders of wanted inbound electronic communications. This is done by entering part entries into the datastore as messages are send outbound, and completing the entry as messages are sent inbound or with reference to an external datasource. The whitelist is automatically created and accurately populated and maintained without the need for any human involvement making it self training. This enables mass automation for whitelist generation and maintenance, and enables consistent, scalable deployment across any and all organisations to ensure accuracy in classification of wanted message senders.

Abstract: This invention concerns electronic message authentication, such as email messages, to ensure valuable messages are reliably delivered to the recipient, while reducing the delivery of unwanted messages. The invention involves: Receiving an electronic message addressed to a recipient. Rejecting messages sent to unknown recipients, from compromised machines or otherwise found invalid. Testing the messages to valid recipients to determine whether the status of the sender of the message can be categorised as trusted or not-trusted. If the status of the sender cannot be categorised either way, then automatically sending a challenge message, and holding the received message pending receipt of a reply. If an acceptable reply is received, categorising the sender as trusted. And, if the sender is categorised as trusted, delivering the message to the recipient.