Hello Linux experts, This actually a question from a friend, but because I can't answer it so I pass it to this group. He have old redhat 9 server with sendmail installed with pop3 server. Users can sent / receive emails to his mail server. The problem is, users set the automatic sent/receive in mail client too often... some set only 5 minutes. (every 5 minutes will check for new emails). He want to limit that, so user can connect to his mail server after specific amount of time, at least in here 15 minutes. So, if users sent/receive email at 2:00 PM, they can connect again to the server at 2:15 PM... before that will be rejected from the server. I belive this is iptables problem, not sendmail or pop3 server, but I have no clue. -- Best regards, Budi Febrianto (mailto:bfebrian@xxxxxxx) -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list