[toaster] Greylisting exclusion question

[John Harmon]

Is there a way to have greylisting ignore all emails to a particular 
address on my server?  Often, when ordering stuff online I need to 
receive immediate information from the site.  Greylisting prevents that 
obviously, but I am a big fan of greylisting.  It cuts my spam 
drastically.  Is there a way I can add one or two email accounts to some 
list to tell greylisting to allow all emails through for that one 
particular address without ever blocking them?

Thanks in advance,
John