[mail-vet-discuss] What is the A-R header really for?

[Murray S. Kucherawy]

John L wrote:
>> I don't see these two as mutually exclusive.  Do they have to be?
>
> Of course not, except to the extent that optimizing for one breaks the 
> other.  If the local MTA strips off all of the incoming A-R headers to 
> protect me from myself, I can't do the forensics.
Well draft 08 doesn't say you have to delete all of them, only the ones 
that claim to be yours (which is of course impossible).  That way you 
can allow through others you might find interesting at your discretion.  
Is that sufficient?