My spam filter, some times, do this:

10/19/03 01:00:20:056 -- (243) Connection from: 200.161.254.80  -  Originating country : Brazil
10/19/03 01:00:20:216 -- (231) Connection from: 68.213.4.242  -  Originating country : United States
10/19/03 01:00:20:707 -- (243) Disconnect
10/19/03 01:00:21:798 -- (231) Disconnect
10/19/03 01:00:22:169 -- (252) Connection from: 62.248.116.139  -  Originating country : Turkey
10/19/03 01:00:22:730 -- (184) - MAPS search done... .
10/19/03 01:00:22:730 -- (184) RCPT TO: marinho@cpovo.net accepted
10/19/03 01:00:23:791 -- (143) Connection from: 64.70.22.104  -  Originating country : United States
10/19/03 01:00:23:992 -- (143) Disconnect
10/19/03 01:00:24:642 -- (210) Connection from: 24.42.26.137  -  Originating country : Canada
10/19/03 01:00:25:013 -- (210) Disconnect
10/19/03 01:00:26:575 -- (190) Connection from: 200.158.106.62  -  Originating country : Brazil
10/19/03 01:00:26:856 -- (190) Disconnect
10/19/03 01:00:27:907 -- (252) Disconnect
10/19/03 01:00:28:198 -- (242) Connection from: 200.140.67.169  -  Originating country : Brazil
10/19/03 01:00:28:318 -- (220) Connection from: 200.141.184.133  -  Originating country : Brazil
10/19/03 01:00:28:358 -- (164) Connection from: 64.156.213.55  -  Originating country : United States
10/19/03 01:00:28:498 -- (220) Disconnect
10/19/03 01:00:28:558 -- (164) Disconnect
10/19/03 01:00:29:710 -- (219) Connection from: 146.82.38.127  -  Originating country : United States
10/19/03 01:00:30:601 -- (150) Disconnect
10/19/03 01:00:30:901 -- (184) Disconnect
10/19/03 01:00:31:873 -- (44) Connection from: 200.168.93.139  -  Originating country : Brazil
10/19/03 01:00:32:073 -- (242) Disconnect

The normal log is something like:

09/07/03 00:00:59:470 -- (182) Connection from: 196.28.20.65  -  Originating country : South Africa
09/07/03 00:01:00:652 -- (267) Disconnect
09/07/03 00:01:02:124 -- (281) Resolving 200.164.10.177 - Not found
09/07/03 00:01:02:124 -- (281) Mail from: reiser@ambra.ro
09/07/03 00:01:02:595 -- (281) - MAPS search done... 521 ATENCAO !!! Sua mensagem foi bloqueada pelo nosso filtro Anti-Spam. Isto ocorreu porque o seu servidor de emails ( 200.164.10.177 ) foi inserido em uma lista internacional ANTI-SPAM ( dnsbl.njabl.org.), por ter sido usado para envio de spam ou estar configurado inadequadamente. Para liberar seu servidor, ENCAMINHE esta mensagem para <whitelist@cpovo.net> para que possamos verificar a situacao do mesmo. open proxy -- 1062884403 .
09/07/03 00:01:02:595 -- (281) 200.164.10.177 - Mail from: reiser@ambra.ro To: lvh@cpovo.net will be disconnected
09/07/03 00:01:02:595 -- (281) Disconnect
09/07/03 00:01:02:845 -- (144) Connection from: 4.4.115.138  -  Originating country : United States
09/07/03 00:01:03:095 -- (285) Connection from: 208.57.69.122  -  Originating country : United States
09/07/03 00:01:05:709 -- (147) Resolving 217.136.226.143 - 143.226-136-217.adsl-fix.skynet.be
09/07/03 00:01:05:709 -- (147) Mail from: millpointewestdog@betterthanhotmail.com
09/07/03 00:01:05:709 -- (147) - MAPS search done... 521 ATENCAO !!! Sua mensagem foi bloqueada pelo nosso filtro Anti-Spam. Isto ocorreu porque o seu servidor de emails ( 217.136.226.143 ) foi inserido em uma lista internacional ANTI-SPAM ( bl.spamcop.net.), por ter sido usado para envio de spam ou estar configurado inadequadamente. Para liberar seu servidor, ENCAMINHE esta mensagem para <whitelist@cpovo.net> para que possamos verificar a situacao do mesmo.9Blocked - see http://spamcop.net/bl.shtml?217.136.226.143 .
09/07/03 00:01:05:709 -- (147) 217.136.226.143 - Mail from: millpointewestdog@betterthanhotmail.com To: dreck@cpovo.net will be disconnected
09/07/03 00:01:05:709 -- (147) Disconnect
09/07/03 00:01:06:200 -- (251) Connection from: 200.158.14.218  -  Originating country : Brazil
09/07/03 00:01:06:440 -- (251) Resolving 200.158.14.218 - 200-158-14-218.dsl.telesp.net.br
09/07/03 00:01:06:440 -- (251) Mail from: virtusbc3s000@bol.com.br
09/07/03 00:01:06:460 -- (144) Resolving 4.4.115.138 - wbar8.tampa1-4-4-115-138.tampa1.dsl-verizon.net

See the diference?

In the first case i have some problems in the mail delivery, then i restart the spamfilter, and he start to work fine!

Any idea?

thanks