Hi Till
I have observed that is only the SASL authentication failure, where fail2ban is not banning the IP
Quote:
ul 25 14:56:05 server1 postfix/smtpd[6259]: warning: unknown[110.186.222.242]: SASL LOGIN authentication failed: authentication failure
Jul 25 14:57:05 server1 postfix/smtpd[6259]: last message repeated 13 times
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Please help, where I should look for?