MAX NUMBER DE RCPT's

[tigre21]

Hi friends... 

I need setup the number max  of rcpt than qmail can send.
For example :
I have a client remote than send 600 messages into a issue of a 
only e-mail, 
I'd like than my users only could send 100 messages max by e-mail
or 100 messages max by hour.

Is it possible?      

Thanks friends

Juan Enciso