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Old 06-25-2012, 11:23 PM   #1
Registered: Sep 2009
Posts: 117

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PTR question

Hi all,
Does the PTR record have to match the MX record or can it match the domain name?

Below is zone file:
$ORIGIN          IN      MX      10      mail          IN      A
mail                  IN      A
Will setting the PTR to work or does it HAVE to point to

Code:          IN   PTR
OR          IN   PTR
DOes it matter? will both work?
Old 06-26-2012, 03:57 AM   #2
Registered: Aug 2005
Location: Malaysia - KULMY / CNXTH
Distribution: Slackware, Fedora, FreeBSD, Sun O/S 5.10, CentOS
Posts: 787
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1) purpose PTR is to resolve ip to domain . normaly limited to 1 domain
2) to resolve domain to ip we use "A" record , can be multiple domain for 1 ip

for the below is not OR . its either one

Code:          IN   PTR
OR          IN   PTR
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