Imap client with ~7500 imap cmds ~250/~500 read() syscall

[Marc Roos]

I am playing a bit with the monitoring, and I have noticed there is one 
client of the chart with ~7500, while the others are between ~17 and ~60 
(dovecot_user_num_cmds).

I assume this is related to the client, or is it possible something is 
wrong on the server side? Is someone having also such numbers or is this 
really strange. Is it possible to limit these cmd's?