[exim] Drop message after first unknown user

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Autor: jarek
Fecha:  
A: exim-users
Asunto: [exim] Drop message after first unknown user
Hello!

    Is it possible, to configure exim, so it will drop/reject message
processing after first "Unknown user" ?
    One of my servers is under permanent DDOS with thousands of clients
trying to send messages to non existing recipients.



best regards
Jarek