How to shield the SMTP relay &doesn't affect the normal mail

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cempot
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How to shield the SMTP relay &doesn't affect the normal mail

Postby cempot » 2014-06-14 09:03

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: Select all

"SMTPD"   3260   140380   "2014-06-14 14:50:11.026"   "221.6.29.142"   "RECEIVED: RCPT TO: <xavier@ms23.hinet.net>"
"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: <slowjamz2044@yahoo.com.tw>"
"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: <mimi87600@yahoo.com.tw>"
"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: <wdpcxljq@jkrcmdjb.com>"
"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: <milkgirl1017@yahoo.com.tw>"
"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: <mnt6813@yahoo.com.tw>"
"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: <n7575719.tw@yahoo.com.tw>"
"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: <patrick510520@yahoo.com.tw>"
"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: <orangestar_music@yahoo.com.tw>"
"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: <savel3847@yahoo.com.tw>"
"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: <ofkrjfdef@yahoo.com.tw>"
"SMTPD"   3336   140385   "2014-06-14 14:50:12.342"   "1.160.122.78"   "SENT: 530 SMTP authentication is required."

Code: Select all

"SMTPD"   2504   140389   "2014-06-14 14:50:20.055"   "114.45.21.119"   "RECEIVED: RCPT TO: <nmdrrete45@yahoo.com.tw>"
"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: <patricia7491@yahoo.com.tw>"
"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: <skyseasand@yahoo.com.tw>"
"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: <pandafs@yahoo.com.tw>"
"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: <saasaa5880@yahoo.com.tw>"
"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: <upc.order@gmail.com>"
"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: <rilovitch@yahoo.com.tw>"
"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: <sanandkumar@yahoo.com.tw>"
"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: <xavier@ms23.hinet.net>"
"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: <sana8039@yahoo.com.tw>"
"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: <qq245956@yahoo.com.tw>"
"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: <wdpcxljq@jkrcmdjb.com>"
"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: <panyecong@yahoo.com.tw>"
"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: <pilie1@yahoo.com.tw>"
"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: <pooh750710@yahoo.com.tw>"
"SMTPD"   1588   140389   "2014-06-14 14:50:22.704"   "114.45.21.119"   "SENT: Too many invalid commands. Bye!"

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mattg
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Re: How to shield the SMTP relay &doesn't affect the normal

Postby mattg » 2014-06-15 03:12

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


Welcome to the internet. :)
Just 'cause I link to a page and say little else doesn't mean I am not being nice.
https://www.hmailserver.com/documentation


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