the value of reverse address lookups?

["Douglas F. Calvert" <douglist () anize org>]

Hello,
 I am interested in finding out what the motivation is for requiring
valid reverse address lookups before connecting to a daemon. I have
heard a number of different explanations, the majority of the responses
point to history/tradition and tcpwrappers. Is there a commonly accepted
justification for this practice?  In my opinion it does not appear to
increase the validity of the connection. But I may be missing something
obvious.
 Thanks in advance...

--dfc returns to lurk mode
Douglas F. Calvert