Milter-greylist

Hi,

an understanding question:

I use RBL blacklisting. A messages is blacklisted if an IP is listed on
two RBLs, eg.

racl blacklist dnsrbl "ZEN" dnsrbl "IX" msg "Bad reputation - %i listed
on too many DNS blacklists: %D" flushaddr

That rule is followed by a rule where I want to greylist an IP for 1h if
listed at just one RBL:

line 247:
racl greylist dnsrbl "ZEN" delay 1h msg "Bad reputation - delaying
messages from %i - listed on blacklist: %D"

see: http://milter-greylist.wikidot.com/white-black-grey

Problem: if I check the logfiles I see hosts running several times into
the greylisting rule (ACL 247 is above greylist ACL), but they never 
pass greylisting, what I don't
understand:

grep greylist.db
--------
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473572358
# 2016-09-11 07:39:18
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473575966
# 2016-09-11 08:39:26
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473579571
# 2016-09-11 09:39:31
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473583206
# 2016-09-11 10:40:06
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473586876
# 2016-09-11 11:41:16
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473590481
# 2016-09-11 12:41:21
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473594102
# 2016-09-11 13:41:42
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473597772
# 2016-09-11 14:42:52
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473601407
# 2016-09-11 15:43:27
69.50.198.162   <uswaterevolution@...>        
<test@...>      1473605073
# 2016-09-11 16:44:33
--------

sendmail log:
--------
Sep 11 06:39:18 mailhost milter-greylist: u8B4dEbL010724: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 07:39:26 mailhost milter-greylist: u8B5dMUg019374: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 08:39:31 mailhost milter-greylist: u8B6dRMp028410: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 09:40:06 mailhost milter-greylist: u8B7e23d004863: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 10:41:16 mailhost milter-greylist: u8B8fCLa013860: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 11:41:21 mailhost milter-greylist: u8B9fHNF022671: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 12:41:42 mailhost milter-greylist: u8BAfcTm031642: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 13:42:52 mailhost milter-greylist: u8BBgnhs008326: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 14:43:27 mailhost milter-greylist: u8BChOoo017193: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 15:44:33 mailhost milter-greylist: u8BDiUwK026040: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
Sep 11 16:45:04 mailhost milter-greylist: u8BEj0sP002580: addr
smms22.uswaterevolution.com[69.50.198.162] from
<uswaterevolution@...> to <test@...> delayed
for 01:00:00 (ACL 247)
--------

Why is above mail not passing? It's the same IP, from and rctp tripple,
trying to pass over hours? Do I need to autowhite too?

Ciao
Marcus