[exim] too many connections from that IP address

my base server's exim is being rude to my home gateway

2008-03-31 22:57:12 Connection from [210.138.216.50] refused: too many
connections from that IP address
2008-03-31 22:57:16 Connection from [210.138.216.50] refused: too many
connections from that IP address

of course, i am the cause

smtp_accept_max = 100
smtp_accept_max_per_connection = 12
smtp_accept_max_per_host = 4

but i need that to cut down the massive assaults.

is there a config knob to have an exception list to the throttle?

( yes, i should write less email. try telling that to my wife :)

randy