I found X10dispatch installed on one of my old laptops Ver 3.7.3
I'm not sure if that was the last build but a link to the last build is available on my
Forum in the X10dispatch section.
To enable flood detection go in to options/Configure Settings/Misc
Check enable flood detection
Set the flood count and Flood sec (not sure if 20 for each is the defalt or what I found worked best in my setup)
Select the macro to run.
click saveIf the select macro drop down is empty then you'll need to create a macro in the Dispatch Macros section.
you may also need to enter your email and configure a few devices so you have some extra options for the macro.
Some have asked for this option to be added to PCC and I did add code so PCC ignored repeated commands but not send an alert.
I'll see about expanding on the code to send an alert.
Hope this info is some what helpful.