For the purposes of blocking subdomains of known-bad domains I definitely
want the "free" wildcard functionality so I'll continue using what I'm
using.  Thanks for the information!

--Mike

On Sun, Feb 19, 2017 at 11:10 AM, Simon Kelley <si...@thekelleys.org.uk>
wrote:

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> There are two ways to do this: one is the way you have.
>
> The second is  using either a file in the same format as /etc/hosts
> and --addn-hosts, using --host-record.
>
> Either probably have similar memory-footprint implications, but the
> first does wildcards, so your example actually matches
> www.example.com, mail.example.com etc. The second doesn't do
> wildcards, but will be much faster as you go through the next couple
> of orders of magnitude.
>
> There are no hard limits, but there are always pratical limits.
>
>
> Cheers,
>
> Simon.
>
> On 16/02/17 19:19, Mike Lee wrote:
> > Hi folks, I'm redirecting undesirable domains to a "black hole" to
> > prevent normal DNS resolution.
> >
> > Specifically, I have this line in my dnsmasq.conf:
> >
> > conf-file=/etc/dnsmasq-blackhole.conf
> >
> > That file in turn has multiple lines of the form:
> >
> > address=/example.com/127.0.0.1 <http://example.com/127.0.0.1>
> >
> > I just recently added a new source of domains from
> > malwaredomains.com <http://malwaredomains.com>, and my
> > blackhole.conf has now ballooned to roughly 20k lines.  Those 20k
> > lines appear to consume about 3MB of memory.  The daemon appears to
> > be running fine, but memory aside, for future reference is there a
> > practical or hard limit to how this type of configuration will
> > scale?  Will it gracefully handle 200k such domain configuration
> > lines? 2M lines?
> >
> > Thanks!
> >
> > --Mike
> >
> >
> > _______________________________________________ Dnsmasq-discuss
> > mailing list Dnsmasq-discuss@lists.thekelleys.org.uk
> > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> >
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