Milter-greylist

> Any m4 expert here to improve that m4 file so that it just adds macros
> and don't remove any?

I am not an m4 expert at all, but the following simply does the job in my .mc file:

INPUT_MAIL_FILTER(`milter-greylist', `S=local:/var/milter-greylist/milter-greylist.sock, F=T')

Just search for INPUT_MAIL_FILTER at the cf/README file in the source distribution
of sendmail, it cannot be simpler than that. On the other hand I am not using all the
features (DRAC, authentication, SPF), you may need more than the default macros if you want to
use some special features of the milter-greylist.

Bests,
Attila