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Re: 4xx responce from a remote delays *all* mail to that host?
On Mon, Mar 13, 2000 at 12:47:06PM +0300, Eugene Crosser wrote:
> I noticed that currently (CVS version) if zmailer gets 4xx code while
> trying to deliver any message to a remote relay, then *all* mail
> queued to the same relay gets delayed. It it intentional? It seems
> to cause unwanted results: these days many MTAs respond 45x if they
> cannot resolve domain in MAIL FROM:. So, if for some reason a
> message with such unresolvable from domain appeares in the queue,
> all mail to the same relay is hold. Any comment?
It is semi-intentional.
Well, not quite.
Intention was to spend as little effort on poorly responding
systems as possible, but the way to signal connection failure
and MAIL FROM 4** are too similar :-/
/Matti Aarnio <email@example.com>