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Nuruddin_Ahmed_'s avatar
Nuruddin_Ahmed_
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May 25, 2016

name server rdns

Hi,

 

recently one customer reported to us that one of our authoratative dns server is not having rdns. I am new to DNS & GTM and was wondering that is it really required? Your thoughts would be highly appreciated.

 

Thanks

 

1 Reply

  • One of the better resources I have used over the year is by Zytrax, called DNS for Rocket Scientists. http://www.zytrax.com/books/dns/

     

    In general, if you are providing authoritative DNS, you should also service reverse DNS for any IP blocks that you manage. I'd say it's not strictly required, but it is a good practice. If you have IP blocks assigned through IANA or through a carrier on your behalf, you should be able to point them to your DNS server pretty easily.

     

    Some mail providers will reject mail originating from a host that doesn't have a reverse DNS record, or if that reverse DNS record doesn't manage a MX record for the domain.