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Created page with "Limit incoming Mail Rate against Spam Scripts: edit main.cf and set: <pre> smtpd_error_sleep_time = 1s smtpd_soft_error_limit = 5 smtpd_hard_error_limit = 10 smtpd_client_con..."
Limit incoming Mail Rate against Spam Scripts:
edit main.cf and set:
<pre>
smtpd_error_sleep_time = 1s
smtpd_soft_error_limit = 5
smtpd_hard_error_limit = 10
smtpd_client_connection_count_limit = 10
smtpd_client_connection_rate_limit = 10
</pre>
Testing Mail Loop (send a Mail every Second):
<pre>
while true; do `date | mail -s "Test Postfix" postbox@yourdomain.com`;sleep 1; done
</pre>
Result: after 10Mails the Senser IP should by blocked!
Add "fail2ban" Log Monitor as second wall protection to kick out bad IP's forever!
edit main.cf and set:
<pre>
smtpd_error_sleep_time = 1s
smtpd_soft_error_limit = 5
smtpd_hard_error_limit = 10
smtpd_client_connection_count_limit = 10
smtpd_client_connection_rate_limit = 10
</pre>
Testing Mail Loop (send a Mail every Second):
<pre>
while true; do `date | mail -s "Test Postfix" postbox@yourdomain.com`;sleep 1; done
</pre>
Result: after 10Mails the Senser IP should by blocked!
Add "fail2ban" Log Monitor as second wall protection to kick out bad IP's forever!