Certo, 

iptables -A INPUT -i eth0 -s 187.33.0.199 -j DROP

Vou deixar assim. Obrigado.


-----Mensagem original-----
De: postfix-br-boun...@listas.softwarelivre.org
[mailto:postfix-br-boun...@listas.softwarelivre.org] Em nome de
della...@terra.com.br
Enviada em: terça-feira, 5 de abril de 2011 17:14
Para: Grupo de Usuarios Postfix do Brasil
Assunto: Re: [Postfix-BR] Servidor sendo atacado (em tempo real)

 
 Da um drop no iptables neste IP por enquanto
 On Ter  5/04/11 17:10 , "Mateus Belluzzo" mat...@pmtb.pr.gov.br
sent:
 Boa tarde Pessoal,
 Como resolvo isto? Desde cedo estou sendo atacado...já está na
letra N
 Apr  5 17:06:57 servidor pop3d: LOGIN FAILED, user=mirabel,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:03 servidor pop3d: LOGIN FAILED, user=mirabel,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:08 servidor pop3d: LOGIN FAILED, user=miranda,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:13 servidor pop3d: LOGIN FAILED, user=miranda,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:19 servidor pop3d: LOGIN FAILED, user=mirela,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:25 servidor pop3d: LOGIN FAILED, user=mirela,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:31 servidor pop3d: LOGIN FAILED, user=miriam,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:37 servidor pop3d: LOGIN FAILED, user=miriam,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:42 servidor pop3d: LOGIN FAILED, user=mirna,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:48 servidor pop3d: LOGIN FAILED, user=mirna,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:07:54 servidor pop3d: LOGIN FAILED, user=misael,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:00 servidor pop3d: LOGIN FAILED, user=misael,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:06 servidor pop3d: LOGIN FAILED, user=moamede,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:11 servidor pop3d: LOGIN FAILED, user=moamede,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:17 servidor pop3d: LOGIN FAILED, user=moises,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:23 servidor pop3d: LOGIN FAILED, user=moises,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:29 servidor pop3d: LOGIN FAILED, user=mona,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:34 servidor pop3d: LOGIN FAILED, user=mona,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:41 servidor pop3d: LOGIN FAILED, user=monica,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:49 servidor pop3d: LOGIN FAILED, user=monica,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:54 servidor pop3d: LOGIN FAILED, user=morfeu,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:08:59 servidor pop3d: LOGIN FAILED, user=morfeu,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:05 servidor pop3d: LOGIN FAILED, user=morgana,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:10 servidor pop3d: LOGIN FAILED, user=morgana,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:15 servidor pop3d: LOGIN FAILED, user=mota,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:20 servidor pop3d: LOGIN FAILED, user=mota,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:26 servidor pop3d: LOGIN FAILED, user=mozart,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:31 servidor pop3d: LOGIN FAILED, user=mozart,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:39 servidor pop3d: LOGIN FAILED, user=muriel,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:46 servidor pop3d: LOGIN FAILED, user=muriel,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:51 servidor pop3d: LOGIN FAILED, user=murilo,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:09:56 servidor pop3d: LOGIN FAILED, user=murilo,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:02 servidor pop3d: LOGIN FAILED, user=mustafa,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:07 servidor pop3d: LOGIN FAILED, user=mustafa,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:13 servidor pop3d: LOGIN FAILED, user=naahman,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:19 servidor pop3d: LOGIN FAILED, user=naahman,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:25 servidor pop3d: LOGIN FAILED, user=naara,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:31 servidor pop3d: LOGIN FAILED, user=naara,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:36 servidor pop3d: LOGIN FAILED, user=nabih,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:42 servidor pop3d: LOGIN FAILED, user=nabih,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:48 servidor pop3d: LOGIN FAILED, user=nabor,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:10:54 servidor pop3d: LOGIN FAILED, user=nabor,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:11:00 servidor pop3d: LOGIN FAILED, user=nader,
 ip=[::ffff:187.33.0.199]
 Apr  5 17:11:05 servidor pop3d: LOGIN FAILED, user=nader,
 ip=[::ffff:187.33.0.199]
 Grato desde já, aguardo comentários...
 Mateus Belluzzo
 Prefeitura de Telêmaco Borba/PR
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