Re: MTS transparency and anonymity

Bruce,

I think you're making this too difficult, by drilling too far down into 
details at this stage.

if anonymous@[] doesn't quite work, there are similar alternatives 
worth considering.  among them are: anonymous@[0.0.0.0], 
anonymous@[127.0.0.1], anonymous@[127.255.255.255], anonymous@[::0], 
and anonymous@[::1].

the problem with ""@[] is that, while valid syntax, the null local-part 
provides another excuse for something to break.  the null local-part is 
not needed; it is sufficient if the domain is valid syntax but not a 
DNS name.

also there might be some merit in being able to differentiate between 
"anonymous" mail (where the sender chose to be anonymous) and mail from 
an unknown sender (such as sent from a web form).  so we could have 
anonymous@[whatever] vs. unknown@[whatever].

Keith