[Exim] Limiting a specific group of servers for SMTP connect

Hi,

Is there a way to limit a range of IP's to allow only a single connection
to Exim?

I'm being flooded with connections from servers with semi-legit emails
(called private employee mail) . I would like to group these and then
allow only a single connection from the group.

Thanks

Nico

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Tel +27 12 663-2710
Faks +27 12 663-2808
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