Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

I have not yet experienced any DNS failures due to a missing PTR record, but am wondering:

Is there any added value in having a valid PTR record on a nameserver IP-address?

share|improve this question
    
Related (Mail Servers): serverfault.com/questions/92605/… –  Kyle Brandt Apr 23 '10 at 16:15

5 Answers 5

up vote 2 down vote accepted

There shouldn't be any real functional issues due to a missing PTR record for a DNS server.

It may come in handy if you're dubugging network problems, but even then, I would think it would have limited usefulness.

share|improve this answer

It's extremely important if you are running a mail server. Otherwise, it's not important (IMHO).

Why? Many spam filters consider a missing PTR record as highly indicative that you are a spammer.

share|improve this answer
    
Some other things, like IRC, care about reverse DNS, but they are few and far between. –  fahadsadah Apr 23 '10 at 16:31

Being able to look up IP's and get a name back seems to have value to me. Troubleshooting errors with only IPs could get tedious.

share|improve this answer

The PTR record is a must have for all Mail Servers that directly relay mails to the Internet failing which many DNS Blacklist will outright reject mails originating from the I.P Address and it could get your I.P Addresses blacklisted globally and many of the DNS Blacklists are globally replicated depending on the Blacklist.

share|improve this answer

It also depends on the domains you are serving with the Public DNS server. Some TLDs require a Nameserver to be "Registered" with the TLD Registry before it can be used with their domains. This is not the case with COM/NET, but some others do require it.

I believe there must be a matching PTR record when you go to register the Nameserver

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.