7317 total connections, 3917 rejects
considering SMTP users with > 15 hits (50 hosts, 2124 connections, 349 rejects)

Clean hosts: (0 rejects) (28)
202.45.161.167 # 648 connects (www.tokyoartbeat.com)
82.195.75.100 # 179 connects (liszt.debian.org)
127.0.0.1 # 166 connects (localhost)
209.132.176.167 # 65 connects (vger.kernel.org)
138.195.130.75 # 59 connects (durga.via.ecp.fr)
91.198.174.5 # 43 connects (lists.wikimedia.org)
213.214.98.20 # 42 connects (elnino.fastxs.net)
77.107.204.94 # 33 connects (p94.204.dsl.perlicobb.com)
213.144.138.186 # 30 connects (natsuki.mplayerhq.hu)
195.245.118.6 # 30 connects (billing.ELANinet.com)
70.103.162.29 # 27 connects (master.debian.org)
88.234.130.222 # 22 connects (unknown)
84.51.81.78 # 20 connects (unknown)
69.57.235.4 # 20 connects (unknown)
201.79.52.74 # 20 connects (unknown)
71.188.187.68 # 20 connects (pool-71-188-187-68.aubnin.fios.verizon.net)
91.23.76.250 # 20 connects (p5B174CFA.dip.t-dialin.net)
81.178.251.53 # 20 connects (81-178-251-53.dsl.pipex.com)
204.16.104.146 # 18 connects (sc157.sjc.collab.net)
66.33.206.23 # 18 connects (frida.dreamhost.com)
217.159.130.234 # 18 connects (217-159-130-234-dsl.plus.estpak.ee)
77.246.104.224 # 17 connects (unknown)
61.243.141.36 # 17 connects (unknown)
84.59.98.137 # 17 connects (dslb-084-059-098-137.pools.arcor-ip.net)
66.35.250.225 # 16 connects (lists-outbound.sourceforge.net)
195.83.9.46 # 16 connects (etudserv.insa-toulouse.fr)
81.214.26.133 # 15 connects (unknown)
66.50.147.188 # 15 connects (cvx-ppp-66-50-147-188.coqui.net)

Mostly clean hosts: (<20% rejects) (4)
198.85.57.138 # 3/35 rejects (unknown)
64.142.28.227 # 1/32 rejects (dmz.lespinasse.org)
84.167.216.14 # 5/30 rejects (p54A7D80E.dip.t-dialin.net)
81.227.124.65 # 2/18 rejects (h65n9c1o1116.bredband.skanova.com)

Unknown hosts: (2)
216.199.190.138 # 27/27 rejects (216-199-190-138.tpa.fdn.com)
81.190.179.181 # 20/20 rejects (host-81-190-179-181.gorzow.mm.pl)

Next autoblacklist candidates: (1)
190.49.127.83 # 13/38 rejects (unknown)

Already autoblacklisted hosts: (15)
68.223.245.248 # 33 connects (adsl-223-245-248.mia.bellsouth.net)
64.127.17.190 # 30 connects (unknown)
86.126.10.136 # 26 connects (unknown)
87.223.148.46 # 25 connects (unknown)
190.48.151.55 # 22 connects (unknown)
195.159.158.74 # 19 connects (unknown)
203.248.234.28 # 17 connects (unknown)
78.183.26.227 # 16 connects (unknown)
91.102.63.42 # 15 connects (unknown)
89.43.12.129 # 15 connects (unknown)
88.240.211.96 # 15 connects (unknown)
77.241.36.4 # 15 connects (unknown)
59.175.35.217 # 15 connects (unknown)
195.182.10.22 # 15 connects (unknown)
84.108.62.81 # 15 connects (bzq-84-108-62-81.cablep.bezeqint.net)

Already manually blacklisted hosts: (0)