Milter-greylist

Hi,

I'm trying to use  "ratelimit" option of milter-greylist to limit the
number of recipient in the  outgoing mail.
So, to limit all users is simple with something like this :

ratelimit "internal" rcpt 400 / 10m
racl blacklist ratelimit "internal" msg "Too many recipients, please retry later"


  exept that we have mailings lists  that contain more than 1000
subscribers and when user send mail to one of these lists, it will be rejected.
The question is how to exclude mailing list for this filter.

Thanks


-- 
Sofiane Habri