Milter-greylist

Hello all,

   I am trying to make milter-greylist work with Sun/Oracle Messaging
Server (part of Oracle unified Communications Suite now), and there
is a problem which I've touched on recently - its partial milter-API
implementation. While extending and porting some rulesets from our
Sendmail-based relays, I found that the "domain" keyword only has
the bracketed IP-quad as the submitter host's name, like "[1.2.3.4]".

   Since milter-greylist does use DNS a lot anyway (RBL, SPF, etc.)
I wonder if it is possible to add a re-request into DNS for such
botched remote client names? Perhaps there is already a keyword to
enable such behavior?

   Also, are there any configuration patterns to enable DNS-based
tests that the remote host's HELO/EHLO name matches the textual
name in the DNS PTR entry for its IP address, and that this name
from DNS PTR resolves back to this IP address (or includes it
among multiple values) - i.e. what I believe Sendmail does when
estimating address "forgery"?

   I tried to print in milter-greylist's "msg" clause the values
of "sendmail macros" listed in different articles and blogs, and
found that if_addr, client_name, client_ptr are not defined; the
helo is defined to whatever the remote host wrote about itself,
client_addr is defined to the IP address (no brackets), and I did
not find a macro which would contain the domain name (%d in milter
greylist formatting), which is the IP in brackets.

Thanks for any ideas,
//Jim Klimov