12 Feb
2012
12 Feb
'12
12:13 a.m.
Hi,
On Sun, Feb 12, 2012 at 00:13, Andy Bennett
<andyjpb(a)ashurst.eu.org> wrote:
This is not a temporary failure tho': there are no nameservers listening
at all.
I've tested it: it happens.
Regards,
@ndy
--
andyjpb(a)ashurst.eu.org
http://www.ashurst.eu.org/
0x7EBA75FF
If your MX is down then senders' MX will
generally queue the message and retry for a few days. If DNS is down and
the MX record cannot even be resolved then the mail will bounce immediately.
This seems to be a common misconception.
A properly implemented MTA must queue and retry also on temporary DNS
lookup errors.