domena bez www

[Martin `MJ' Mares]

> 2. Nikde neni zakazano (v zadnem rfc) ze cname nesmi ukazovat na cname,
>    je to pouze nedoporucene.

To je tezke rici, standardy okolo DNS vznikaly v dobe, kdy jeste nebylo
moc ustalene presne specifikovani SHOULD / MUST, ale kazdopadne RFC 1034
[STD 13] pomerne jednoznacne rika, ze:

| Domain names in RRs which point at another name should always point at
| the primary name and not the alias.

RFC 1912 [oficialne pouze informational] je dokonce jeste striktnejsi:

| Don't use CNAMEs in combination with RRs which point to other names
| like MX, CNAME, PTR and NS.  (PTR is an exception if you want to
| implement classless in-addr delegation.)

A tak by se dalo pokracovat ... muj osobni nazor je, ze je to pripustne,
nicmene pokud to opravdu neni nutne nebo doporucene nejakym dalsim standardem
(napriklad classless delegace), je nanejvys vhodne se tomu vyhnout.

				Have a nice fortnight
-- 
Martin `MJ' Mares   <mj na ucw.cz>   http://atrey.karlin.mff.cuni.cz/~mj/
Faculty of Math and Physics, Charles University, Prague, Czech Rep., Earth
Always remember that you are absolutely unique ... just like everyone else.