Seems it's a recommendation by apache
https://wiki.apache.org/spamassassin/CachingNameserver
-Original Message-
From: MIMEDefang [mailto:mimedefang-boun...@lists.roaringpenguin.com] On Behalf
Of G.W. Haywood
Sent: 15 March 2016 16:07
To: mimedefang@lists.roaringpenguin.com
Subject: Re: [Mimedefang] long dns timeouts when first dns in /etc/resolv.conf
is down
Hi there,
On Tue, 15 Mar 2016, Marcus Schopen wrote:
> Am Montag, den 14.03.2016, 16:08 + schrieb G.W. Haywood:
> > On Mon, 14 Mar 2016, Marcus Schopen wrote:
> >
> > > ... It shouldn't make a difference to mimedefang if one of the dns
> > > server is down. Any ideas?
> >
> > Run a nameserver of your own?
>
> An own dns can go down too.
Of course it can. But you can fix it. ;)
--
73,
Ged.
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