Brad Knowles writes:
> At 7:18 PM -0500 12/23/1996, Chip Rosenthal wrote:
> >Looks like AOL broke their DNS. The MX records used to point to round
> >robins of A RRs. Now they are pointing to CNAMEs. That's illegal.
> >They should fix it.
>
> I used to think it was illegal, too. However, after
> conversations with Paul Vixie and other DNS gurus, it is now my
> understanding that this is not the greatest solution, but is not
> technically illegal
OK ... so everything I know *is* wrong.
I glanced through RFC-1912 ("Common DNS Errors"), STD-13 ("Domain
Name System"), and STD-14 ("Mail Routing and the Domain System").
I've found lots of "should nots" and "ought nots", but the only
"must not" was one specific case in STD-14 having to deal with
elimination of target MXes.
I'm kind of bothered that this deeply entrenched "fact" seems to
be wrong.
--
Chip Rosenthal * Unicom Systems Development * <chip@unicom.com>
URL: http://www.unicom.com/ * 4868D8BE10C86BDE 6017000BA783998E
Helmet good. Law bad.
|
|
