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 Post subject: How to shield the SMTP relay &doesn't affect the normal mail
PostPosted: 2014-06-14 09:03 
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There is always a lot of dynamic IP address want to try the SMTP relay mail, cause my log is very large, how to block them?
PS:The IP address is too many^

Code:
"SMTPD"   3260   140380   "2014-06-14 14:50:11.026"   "221.6.29.142"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3260   140380   "2014-06-14 14:50:11.027"   "221.6.29.142"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3172   140385   "2014-06-14 14:50:11.158"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3172   140385   "2014-06-14 14:50:11.160"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   960   140385   "2014-06-14 14:50:11.286"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   960   140385   "2014-06-14 14:50:11.288"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3356   140380   "2014-06-14 14:50:11.388"   "221.6.29.142"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3356   140380   "2014-06-14 14:50:11.388"   "221.6.29.142"   "SENT: Too many invalid commands. Bye!"
"SMTPD"   3364   140385   "2014-06-14 14:50:11.432"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3364   140385   "2014-06-14 14:50:11.434"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1208   140385   "2014-06-14 14:50:11.576"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1208   140385   "2014-06-14 14:50:11.577"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   2108   140385   "2014-06-14 14:50:11.726"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   2108   140385   "2014-06-14 14:50:11.727"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1764   140385   "2014-06-14 14:50:11.878"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1764   140385   "2014-06-14 14:50:11.880"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3364   140385   "2014-06-14 14:50:12.028"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3364   140385   "2014-06-14 14:50:12.030"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3620   140385   "2014-06-14 14:50:12.186"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3620   140385   "2014-06-14 14:50:12.188"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3336   140385   "2014-06-14 14:50:12.341"   "1.160.122.78"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3336   140385   "2014-06-14 14:50:12.342"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."

Code:
"SMTPD"   2504   140389   "2014-06-14 14:50:20.055"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   2504   140389   "2014-06-14 14:50:20.056"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3172   140389   "2014-06-14 14:50:20.300"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3172   140389   "2014-06-14 14:50:20.302"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1764   140389   "2014-06-14 14:50:20.535"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1764   140389   "2014-06-14 14:50:20.536"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1888   140389   "2014-06-14 14:50:20.780"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1888   140389   "2014-06-14 14:50:20.781"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1588   140389   "2014-06-14 14:50:21.022"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1588   140389   "2014-06-14 14:50:21.024"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   2504   140387   "2014-06-14 14:50:21.077"   "112.124.115.239"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   2504   140387   "2014-06-14 14:50:21.079"   "112.124.115.239"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1208   140389   "2014-06-14 14:50:21.268"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1208   140389   "2014-06-14 14:50:21.269"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   960   140389   "2014-06-14 14:50:21.512"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   960   140389   "2014-06-14 14:50:21.514"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3336   140387   "2014-06-14 14:50:21.561"   "112.124.115.239"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3336   140387   "2014-06-14 14:50:21.562"   "112.124.115.239"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1144   140389   "2014-06-14 14:50:21.753"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1144   140389   "2014-06-14 14:50:21.754"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3172   140389   "2014-06-14 14:50:21.988"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3172   140389   "2014-06-14 14:50:21.989"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1588   140387   "2014-06-14 14:50:22.046"   "112.124.115.239"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1588   140387   "2014-06-14 14:50:22.046"   "112.124.115.239"   "SENT: Too many invalid commands. Bye!"
"SMTPD"   3364   140389   "2014-06-14 14:50:22.223"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3364   140389   "2014-06-14 14:50:22.225"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   3260   140389   "2014-06-14 14:50:22.465"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   3260   140389   "2014-06-14 14:50:22.466"   "114.45.21.119"   "SENT: 530 SMTP authentication is required."
"SMTPD"   1588   140389   "2014-06-14 14:50:22.703"   "114.45.21.119"   "RECEIVED: RCPT TO: <[email protected]>"
"SMTPD"   1588   140389   "2014-06-14 14:50:22.704"   "114.45.21.119"   "SENT: Too many invalid commands. Bye!"


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 Post subject: Re: How to shield the SMTP relay &doesn't affect the normal
PostPosted: 2014-06-15 03:12 
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Joined: 2007-06-14 05:12
Posts: 11886
Location: 'The Outback' Australia
Using Geo-IP
Using a comprehensive firewall
utilising autoban in hMailserver (only for same IP address)
Using some rules to track common elements of the SPAM, and kill the connection when this is detected


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