Re: DynDNS Won't Deliver NDRs

[der Mouse <mouse () rodents montreal qc ca>]

> > [dyndns deliberately breaking NDRs]
> The only real question I have here is that they say the value of NDRs
> is nil.  Not the first time I've heard this.  Perhaps the RFC should
> change?

I think it should not change, because I disagree; I do not believe
NDRs' value is nil.  I find NDRs of overall positive value; that is,
the value of genuine NDRs outweighs the pain of blowback.

But then, I actually bother to (mechanically) filter my incoming NDRs
to see whether the bouncing message was mine, and reject the NDR if not
(with an explanatory message, of course); and I am willing to outright
block anyone that sends me NDRs that are not mechanically identifiable
as NDRs (that do not follow RFC3462).  If some popular MTA were to grow
the capability to do this (put some kind of signature in outgoing mail,
and look for it in incoming NDRs) it might help.

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