how to disable a probe?

Hello,

how to switch off the "probe" functionality and autounsubscribing
most of mail service providers uses spam filters so there are some
unwanted situations occurs:
subscriber can't get the message from mailist but recieving probe messages
is there some way to switch the probing and autounsubscribing too off

Sorry for my terrible english
I mean that functionality (from ezmlm manual)

ezmlm uses the subscriber address and message number encoded within the sender address to keep track of which message have ``bounced'' for which recipient. Since messages can bounce for a variety of reasons, ezmlm doesn't remove a subscriber from the list after a single bounce. Rather, it waits about 12 days after the first bounce, then sends a ``warning'' message to the subscriber. The warning message lists the numbers of the messages missed. The user can retrieve these from the archive. If this warning message bounces as well, ezmlm waits another 12 days, then sends a ``probe''. First when this message bounces is the subscriber removed from the subscriber database. This mechanism guarantees that a subscriber won't be removed due to a temporary error, while assuring that all non-existent 
 or permanently failing addresses will be removed eventually


thanks,
Nikolay Ryzhkov