Actor System and Method for Transmitting a Message from a first Actor to a Second Actor

A method of transmitting a message and a distributed computer system therefor are disclosed. The message is to be transmitted from a first actor to a second actor, the first actor is hosted by an actor system implemented in the distributed computer system. The method includes generating the message that has payload data and a trigger for triggering verification of whether the second actor has successfully received the message. The method includes sending, the message to the second actor. The method includes in response to determining, in response to the first trigger, that the second actor has not successfully received the message, instructing the first actor that the message is not received by the second actor.