Reverzni DNS - jak overit ?

[Martin Och]

----- Original Message ----- 
From: Petr Soucek <petr na ryston.cz>
To: <linux na linux.cz>
Sent: Monday, September 13, 1999 2:33 PM
Subject: Re: Reverzni DNS - jak overit ?



> "Make sure your PTR and A records match.  For every IP address, there
> should be a matching PTR record in the in-addr.arpa domain.  If a host
> is multi-homed, (more than one IP address) make sure that all IP
> addresses have a corresponding PTR record (not just the first one).
> Failure to have matching PTR and A records can cause loss of Internet
> services similar to not being registered in the DNS at all.  Also, PTR
> records must point back to a valid A record, not a alias defined by a
> CNAME."

Dovolte mi (mozna hloupou otazku):
pokud existuje xxx.domena.cz jako A record k nejake IP, 
MUSI k teto IP existovat PTR xxx.domena.cz tedy uplne stejne pojmenovany??

Nejak to nechapu...
--
Martin Och
Network Administrator
CS-COMPEX, a.s.