[Exim] Limiting rate of sucessive incoming connections from …

Hi,

I can use these options to limit the rate of
incoming messages/recipients within a single
connection:

smtp_ratelimit_mail
smtp_ratelimit_rcpt

This can limit the number of messages in a
single connection:

smtp_accept_max_per_connection

This can limit the number of simultaneous
connections from a single host:

smtp_accept_max_per_host

What about a high rate of successive
connections? Can Exim impose a limit
on the rate of sequential incoming
connections from a single host?

Please advise.

Thanks,
Everton