LM> They have a way to limit incoming polling 
 LM> One of my downlink poll Every 8 minutes, i ask him to poll every hours!!
 LM> have a control in mystic to accept  poll every 60 minutes not less?

There is not really any way you can stop a client from trying to connect as often as they want to your server unless you ban them at the network level.

Mystic can automatically ban an IP after a certain number of attempts within a time window, but that still doesn't stop them from connecting it will just refuse to service them.

I suppose I could add a specific feature to BINKP server that gives them an "BUSY" with a message that they can only connect X many times per Y seconds. If they are within those limits it would give them mail, if they were not within those limits it would give them a message and disconnect.

But I wonder if there is really a point to do that since at that point they're already connected to you anyway.  I am open to suggestions as to whether or not such a feature would be worth it.

... Don't sweat the petty things and don't pet the sweaty things

--- Mystic BBS v1.12 A48 2022/04/03 (Windows/64)