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my mail server is in the dmz zone. he is behind firewall. he has the public static address. i plan that installing the proxmox mail gateway in the dmz zone. how i configure my proxmox? i assign the public ip address of mail server to the mail gateway or i assign new ipublic ip address to the...

I have the mdaemon mailserver on windows 2012. i have problems with the smtp bruteforce attacks. i configured the server that block ip addreses that authanticate failed 3 times. but those attacks are very coomon and my server with performance is very bad. your solution can resolve my problem.