local changes to a domain

[Mark Andrews]

	rbl.<mydomain>. DNAME 1234-1234-1234.some-rbl.com.

In message <CAJCaPNTj90xRT9BEed2qTGc7C4a2xFA6QMB7axT=+=5HjrZkog at mail.gmail.com>
, Michael Grant writes:
> 
> I could also have called the subject of this mail 'augmented reality'.
> 
> I pay to use an RBL.  The RBL has provided me a license key that I simply
> tack onto their domain name like 1234-1234-1234.some-rbl.com.  As normal,
> queries go to something like 4.3.2.1.1234-1234-1234.some-rbl.com. to query
> the if the ip address 1.2.3.4 is in their rbl.
> 
> Here's my problem.  As mail passes through my system and is marked up by
> spamassassin, spamassassin kindly puts the domain name including my license
> key into the headers when someone is on this rbl.
> 
> One way I thought about solving this would be to put make my local caching
> bind do a sort of "alias" or "augment the reality" of this domain locally
> for me.  For example create a local version of xxxx-xxxx-xxxx.some-rbl.com
> that when I query it, my local dns server turns around and queries
> 1234-1234-1234.some-rbl.com (plus any sub domains tacked on).  So in my
> spamassassin conf, I would only put xxxx-xxxx-xxxx.some-rbl.com.  Thus, my
> license key would never leak out and I wouldn't have to modify anything in
> spamassassin.  I hope this is clear.
> 
> Is this possible?  It's like I need to create my own version of the zone
> file for some-rbl.com but only part of it (the one line) and for everything
> else, it is looked up normally by looking up some-rbl.com.  If so, how
> might I do this in bind?
> 
> Thanks.
> 
> Michael Grant
> 
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> 
> <div dir=3D"ltr">I could also have called the subject of this mail 'aug=
> mented reality'.<div><br></div><div>I pay to use an RBL.=A0 The RBL has=
>  provided me a license key that I simply tack onto their domain name like <=
> a href=3D"http://1234-1234-1234.some-rbl.com">1234-1234-1234.some-rbl.com</=
> a>.=A0 As normal, queries go to something like <a href=3D"http://4.3.2.1.12=
> 34-1234-1234.some-rbl.com">4.3.2.1.1234-1234-1234.some-rbl.com</a>. to quer=
> y the if the ip address 1.2.3.4 is in their rbl.</div><div><br></div><div>H=
> ere's my problem.=A0 As mail passes through my system and is marked up =
> by spamassassin, spamassassin kindly puts the domain name including my lice=
> nse key into the headers when someone is on this rbl.<br></div><div><br></d=
> iv><div>One way I thought about solving this would be to put make my local =
> caching bind do a sort of "alias" or "augment the reality&qu=
> ot; of this domain locally for me.=A0 For example create a local version of=
>  <a href=3D"http://xxxx-xxxx-xxxx.some-rbl.com">xxxx-xxxx-xxxx.some-rbl.com=
> </a> that when I query it, my local dns server turns around and queries <a =
> href=3D"http://1234-1234-1234.some-rbl.com">1234-1234-1234.some-rbl.com</a>=
>  (plus any sub domains tacked on).=A0 So in my spamassassin conf, I would o=
> nly put <a href=3D"http://xxxx-xxxx-xxxx.some-rbl.com">xxxx-xxxx-xxxx.some-=
> rbl.com</a>.=A0 Thus, my license key would never leak out and I wouldn'=
> t have to modify anything in spamassassin.=A0 I hope this is clear.</div><d=
> iv><br></div><div>Is this possible?=A0 It's like I need to create my ow=
> n version of the zone file for <a href=3D"http://some-rbl.com">some-rbl.com=
> </a> but only part of it (the one line) and for everything else, it is look=
> ed up normally by looking up <a href=3D"http://some-rbl.com">some-rbl.com</=
> a>.=A0 If so, how might I do this in bind? =A0</div><div><br></div><div>Tha=
> nks.</div><div><br></div><div>Michael Grant</div></div>
> 
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org