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 How to setup a Reverse DNS?
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Shaggy
Support Moderator

Ireland
6780 Posts

Posted - 17 August 2005 :  05:53:25  Show Profile
Since moving to the new server, we've noticed that a few e-mails are bouncing becuase we do not have a reverse DNS setup. A couple of quick Googles didn't pull up anything idiot-proof enough for me to confidently do it myself so was just wondering if anybody had an easy to follow, step-by-step guide to getting it setup and what my rDNS should be if my IP address is 217.115.112.107? It seems that it's not just the reverse of the IP address but that I also need to add in some letters?


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HuwR
Forum Admin

United Kingdom
20584 Posts

Posted - 17 August 2005 :  06:22:36  Show Profile  Visit HuwR's Homepage
it would be something like

107.112.115.217.in-addr.arpa
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Shaggy
Support Moderator

Ireland
6780 Posts

Posted - 17 August 2005 :  06:25:18  Show Profile
Thanks, Huw. Should in-addr and arpa be replaced with anything specific to my server or can I use what you have above as is? Whereabouts do I enter this or is it something I need to get my host to do?


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HuwR
Forum Admin

United Kingdom
20584 Posts

Posted - 17 August 2005 :  06:35:32  Show Profile  Visit HuwR's Homepage
it is always in-addr.arpa
if you don't have your own dns server it is unlikely you will be able to set one up, 112.115.217.in-addr.arpa needs to be set up as a domain with 107.112.115.217.in-addr.arpa being a pointer to your MX server
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Shaggy
Support Moderator

Ireland
6780 Posts

Posted - 17 August 2005 :  06:36:32  Show Profile
Thanks, again, Huw Will get onto my host now to get them to get it up.


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Podge
Support Moderator

Ireland
3775 Posts

Posted - 17 August 2005 :  07:46:35  Show Profile  Send Podge an ICQ Message  Send Podge a Yahoo! Message
While you are at it you should also setup spf - http://spf.pobox.com/wizard.html

SPF is a text dns record which specifies all the valid servers i.p. addresses which can send email from your domain.

Podge.

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