Re: Moderated posts?

[Miles Fidelman <mfidelman@meetinghouse.net>]

Joe wrote:
> On Sun, 19 Oct 2014 23:17:28 +0200
> lee <lee@yagibdah.de> wrote:
>
> > Tanstaafl <tanstaafl@libertytrek.org> writes:
> >
> > > On 10/17/2014 9:24 PM, lee <lee@yagibdah.de> wrote:
> > > > You do not accept messages you can not deliver unless you are
> > > > relaying them.
> > > Absolutely wrong, this rule fully applies to relays just as it does
> > > final destination servers.
> > I'm not sure what you mean.  How will you know whether messages to a
> > particular destination address can be delivered before sending a
> > message to that address so that you can decide whether to accept a
> > message you're relaying to that address?
> I think it's generally an admonishment not to get involved in relaying.
> The point of relaying is that the original sender cannot directly reach
> the recipient's authoritative mail server, in which case it can't
> generally query for recipient validity.

Relaying happens all the time - e.g., when an organization designates a 
single mail gateway, that then distributes to department-level mail systems.

And, in the corporate world, NDRs from down-stream servers are commonplace.

Miles Fidelman


--
In theory, there is no difference between theory and practice.
In practice, there is.   .... Yogi Berra