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We have had two attacks on our server in the last 2 days.

One tried about 200 failed SMTP logins using a dictionary attack of names the other used a POP3 attack.

They failed obviously but both attacks came from different IPs but each type had the same attack so it was just a brute force attack.

Why is there seemingly no option in the control panel to blacklist an IP for 30 minutes after say 10 incorrect logins?
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