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Comments:
<0> hi there, could you recommend me a win-app that takes me dynamic ip and posts it on irc or to some server periodically?
<1> woah
<2> eh?
<1> ....
<3> is it possible to have a single reverse zone for 192.168.0/20 ?
<4> negativecreep: yes, but don't got there :-)
<5> is there any good reason not to make mail.foo.com (which is pointed to by the MX record, of course) a CNAME instead of an A?
<6> cnames are bad.... best not to use them
<5> jamesd: why are cnames bad, just in general, or in that particular context?
<6> they don't work in many contexts, and they require extra lookups, and most people use them wrong anyway
<5> in what contexts don't they work?
<5> and, how do most people use them wrong?
<5> the thing that strikes me about CNAMEs is that they are usually done that way for administrative convenience instead of any technical need, which seems wrong. there should be a way in popular DNS programs to have a SAMEAS or so, which basically lets you retain that advantage without an extra lookup
<5> if i could do a SAMEAS, i would that every time instead of CNAME
<5> but if i dont care about the extra lookup, what are the other minusses?
<6> cnames breaks some mail servers when used for MX records, DNS doesn't support NS records that point to CNAMES
<5> ah ok, good enough reason not to use them in my case
<4> http://WWW.sabi.co.UK/Notes/linuxDNSZones.html for some notes on what is legal and not in zone files
<5> i'm curious about the ***ertion that most people use them "wrong"
<5> i mean, besides cross-domain CNAMEs or using it as MX or NS or top level in the record, jamesd implied there were other common sins
<4> brianski: the DNS configs are basically ***embler. It is possible, indeed very easy to misuse them.
<4> brianski: do a search for Bernstein's article on glue records and out of bailiwick glue, and CNAMEs and other abominations.
<4> brianski: <6> idea to have a ''safer'' aliasing mechanism is not bad. Too late though.
<5> Blis***: what idea of safer aliasing mechanisms?
<4> brianski: well, the problem with zone files is that sometimes you want a lot of domain names to have the same IP address value.
<5> Blis***: do you mean my idea about safer aliasing :) ?
<4> brianski: e.g. you got one machine that does WWW, DNS, SMTP, ...
<4> brianski: got confused....
<5> hehe quite alright
<5> just p***ed the confusion on a bit :)
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