How to make a full limitaion connection to mailserver?

duchoangduchoang Registered Users Posts: 1 ■□□□□□□□□□
Hi everyone,
I'm new in checkpoint management. My mail server working behind the checkpoint is recently attacked many times by DoS. The POP3 service receives many connections at a time that makes all mail services suspended.
I'd like to configure a protection at IPS to block any IP that will be accessing to my mail server with exceeding a connection limitation.
Can anyone guide me how to configure the checkpoint?
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