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cschelstraete
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Create a reverse dns entry on godaddy because we own our IP and use BGP

Hello,
We just moved to BGP and now own our own ip block from ARIN. We need to create a reverse dns entry. We have pointed ARIN to our godaddy dns servers but need to create the reverse entry to avoid spam blocking of our email. We have our own Exchange server and static NAT.
-We cannot have our ISP do this because we own the block.
Thank you in advance,
Carl
DNS* ip* Public DNS

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cschelstraete

8/22/2022 - Mon
jmac44

Yes you should be able to.
We cannot have our ISP do this because we own the block.


Did you purchase those IP's from the ISP? We own a block of IP's too and that's how it is done. The organization that sold you the block of IP's (typically an ISP) has to set the reverse DNS record for your email server on their dns router. If they are giving you gruff over, you're probably not talking to the right department. Ask for their networking department or to speak with a manager.
Tom Cieslik

Reverse DNS Lookup can be created only by your ISP. Because you don't have your own registered public DNS servers you can't create revers lookup.
You need to ask your internet provider to do it.
It they telling you they can't it mean person you're taking to is a dump and know nothing about DNS entry.
Like Justin said, ask them to contact you with some department manager. Then need to do it for you.
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cschelstraete

ASKER
Thank you all for the comments. Let me add some more detail here.
-We purchased a /24 block of IPs from a broker, not our ISP. We are the registered owner in ARIN and we can designate the DNS authority server(s). We have two ISPs now and use border gateway protocol to allow for failover.
-Called our ISP and they said that cannot create a reverse dns entry for our IP range because they don't own it.
Not sure where to create the record if Godaddy can't do it. Should we use a 3rd party DNS service and make them authoritative for the IP range?
I started with Experts Exchange in 2004 and it's been a mainstay of my professional computing life since. It helped me launch a career as a programmer / Oracle data analyst
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Jan Bacher

If you are pointing your prefixes in ARIN's database to GoDaddy's DNS servers and you are using them as authoritative servers for your inverse zones, have you configured those zone files?
jmac44

I would divest those IP addresses back to the broker or another one and get your block legitimately through an ISP.
cschelstraete

ASKER
Thanks all. We did point our ARIN records to Dyn and had configured a zone file there with the reverse pointer. Working as of last week.
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