Whitelisting

["Pham, Tu" <tu...@vicscouts.asn.au>]

Hi,
 
I just wanted to know what the difference between using
 
whitelist_from_rcvd [address] [domain] and using whitelist_from. i use
to use the first one but it didnt seem to do anything so i started using
whitelist_from instead.
 
About how many entries can u have until it starts having an effect on
performance?
 
Thanx,
 
Tu