On Mon, Sep 20, 2010 at 12:33 PM, Wietse Venema <wie...@porcupine.org> wrote: > Yang Zhang: >> Can you pinpoint the exact RFC & section you're referring to? Thanks. > > I will give you as home work to study the following documents: > > RFC 821 > RFC 2821 > RFC 5321 > > These have lots of other good stuff about Internet mail.
I had looked at these and couldn't find any specification of the guarantees - would you mind pointing out what you're referring to? Thanks, greatly appreciate it. -- Yang Zhang http://yz.mit.edu/
