iptables blocking email and webmail

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    Iptables and Ipset blacklist, blocking email and webmail access

    Hi all, I have one web server (Linux Ubuntu, Apache, MySql, Plesk), with some sites, and after two invasions, and hundred of invasion attempts, I'm trying to get more ensurance, with iptables and ipset blacklist, following one tutorial that I found in the web. Occour that, after to apply the...