[Exim] Logging dictionary attacks

I'm probably missing something fundamental in the docs but I can't see
an easy way to log failed "RCPT TO" attempts, such as would happen
during a dictionary attack. Ideas? Section in the docs that I've
skimmed over too fast? :)

Mark

-- 
The Flying Hamster <hamster@???>         http://hamster.wibble.org/
"So which of the return codes 0, 2 or -3 do you think equals 19418?"