On Sat, Dec 7, 2013 at 6:02 AM, Matus UHLAR - fantomas <uh...@fantomas.sk>wrote:
> >Ricardo Kleemann writes:
> >>I'm trying to understand when the "No such domain" error is issued.
>
> On 07.12.13 08:42, Sam Varshavchik wrote:
> >DNS lookup failure.
>
> When I take it this way, I would more say a DNS error - simple DNS failures
> do not generate permanent but temporary errors, which cause deferrals, not
> failures.
>
>
I'll try to corroborate what I have in the relay server logs and the list
server logs, but it's a lot of traffic and very difficult.
However, considering this could be a DNS error, what I don't understand is
why in the same second the server will have both successful and failed
deliveries.
Is there a way to cache DNS lookups, since this is a large number of
messages to the exact same domain?
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