hacking mail?

Discussion in 'General' started by fordwrench, May 20, 2007.

  1. fordwrench

    fordwrench Member

    I get a lot of these everyday:

    May 20 02:04:51 srv1 postfix/smtpd[9411]: NOQUEUE: reject: RCPT from unknown[218.88.34.12]: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in local recipient table; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<163data.com.cn>
    May 20 02:04:51 srv1 postfix/smtpd[9411]: NOQUEUE: reject: RCPT from unknown[218.88.34.12]: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in local recipient table; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<163data.com.cn>
    May 20 02:04:52 srv1 postfix/smtpd[9411]: NOQUEUE: reject: RCPT from unknown[218.88.34.12]: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in local recipient table; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<163data.com.cn>
    May 20 02:04:53 srv1 postfix/smtpd[9411]: NOQUEUE: reject: RCPT from unknown[218.88.34.12]: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in local recipient table; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<163data.com.cn>
    May 20 02:04:54 srv1 postfix/smtpd[9411]: NOQUEUE: reject: RCPT from unknown[218.88.34.12]: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in local recipient table; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<163data.com.cn>
    May 20 02:04:55 srv1 postfix/smtpd[9411]: NOQUEUE: reject: RCPT from unknown[218.88.34.12]: 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in local recipient table; from=<[email protected]> to=<[email protected]> proto=SMTP helo=<163data.com.cn>


    how do I stop these people from trying to hack in?
    How can I stop them by ip?
    I have fail2ban installed but it does not catch this.

    Fordwrench
     
  2. till

    till Super Moderator Staff Member ISPConfig Developer

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