This morning, I got another notification email from my Firewall that someone is trying to bruteforcing one of my email.
If you come to this page by searching the IP listed here, it’s from China, and as always, add them to your blocked lists.
Time:    Sun Apr 3 00:35:20 2011 +0700
IP:Â Â Â Â Â 183.46.30.125 (CN/China/-)
Failures: 5 (smtpauth)
Interval: 300 seconds
Blocked:Â Permanent Block
Log entries:
2011-04-03 00:35:09 dovecot_login authenticator failed for (px168) [183.46.30.125]: 535 Incorrect authentication data (set_id=webmaster)
2011-04-03 00:35:11 dovecot_login authenticator failed for (px168) [183.46.30.125]: 535 Incorrect authentication data (set_id=webmaster)
2011-04-03 00:35:13 dovecot_login authenticator failed for (px168) [183.46.30.125]: 535 Incorrect authentication data (set_id=webmaster)
2011-04-03 00:35:14 dovecot_login authenticator failed for (px168) [183.46.30.125]: 535 Incorrect authentication data (set_id=webmaster)
2011-04-03 00:35:16 dovecot_login authenticator failed for (px168) [183.46.30.125]: 535 Incorrect authentication data (set_id=webmaster)
Article Source : http://blog.erawanarifnugroho.com/2011/04/02/hacking-attempt-from-china.html