Milter-greylist

I posted about this a couple of weeks ago.  We are a large ISP and  
receive approx. 8+ million emails a day.  We maintain a list of white- 
listed that is around 6k entries at present.  The question was raised  
as to why we have so many entries.  We have this many entries as we  
have found that there are a lot of broken MTA's out there, and our  
customers need to receive mail from legitimate hosts regardless of  
the limitations of of the MTA (old Novell groupwise, misconfigured  
Postfix, etc).


We are seeing addresses being greylisted despite being whitelisted.

rb:/etc/mail# grep 216.139.107.5 greylist.conf
acl whitelist addr 216.139.107.5



Sep 14 06:55:47 k.eac milter-greylist: k8EBt3YY018760: addr  
ipserv5.lamoni.k12.ia.us[216.139.107.5] from <user@...>  
to <user@...> delayed for 00:02:00


any suggestions?

--
Michael Osten