Dear CentOS Community Is totally clear there's no support sendmail platform today, but I need to stop SMTP brute-force attack on sendmail. My server is attacked today, my maillog look like : 4624 at myserver.com>, proto=ESMTP, daemon=MTA, relay=myserver.com [127.0.0.1] Jun 14 19:07:01 at6412 sendmail[24627]: q5EN71jC024627: from=<>, size=3958, class=0, nrcpts=1, msgid=<201206142307.q5EN710u024623 at myserver.com>, proto=ESMTP, daemon=MTA, relay=myserver.com [127.0.0.1] Jun 14 19:07:23 at6412 sendmail[24868]: q5EN7M6D024868: from=< qmarket at qmarket.cl>, size=2193, class=0, nrcpts=2, msgid=< 20120614231448.1E99A13EE5F at smtp02qmarket.qmarket.cl>, proto=ESMTP, daemon=MTA, relay=[200.1.174.121] Jun 14 19:07:24 at6412 sendmail[24961]: q5EN7OT4024961: from=< nobody at 2012.123icq.cl>, size=4716, class=0, nrcpts=1, msgid=< E1SfJ8H-0005kv-JE at 2012.123icq.cl>, proto=ESMTP, daemon=MTA, relay= pc1.globalmac.cl [200.29.231.61] (may be forged) Jun 14 19:07:33 at6412 sendmail[25013]: q5EN7SqK025013: from=< a.pfsvtij at yahoo.com>, size=760, class=0, nrcpts=1, msgid=< 1531549-634033-36 at owfzdl.net>, proto=SMTP, daemon=MTA, relay= h095159149119.ys.dsl.sakhalin.ru [95.159.149.119] Jun 14 19:07:37 at6412 sendmail[25065]: q5EN7bCj025065: from=< en.viaimport at gmail.com>, size=4531, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=186-105-73-29.baf.movistar.cl [186.105.73.29] I need help for STOP this spamers right now. Thanks in advance to anyone who can guide me With Kind Regards, Gustavo A. Lacoste Z. Curacautín - Chile Skype: knxroot Msn & Gtalk: knx.root [at] gmail.com Home page: http://www.lacosox.org - - *Por favor, evite enviarme documentos adjuntos en formato Word o PowerPoint. Lea http://www.gnu.org/philosophy/no-word-attachments.es.html*