JohnnyD74
asked on
Alias IP and reverse DNS
Hello Experts,
I have a router I have set up with a static IP and several alias static IP addresses in the usable range provided by the ISP (Comcast). On one of alias IP's, I forwarded port 25 to my Exchange server. I would like to set up a reverse DNS record (mail.domain.com) and tie it to that alias IP.
My question is....can I set up a reverse dns record to an alias IP on a router? When I do go to www.whatismyip.com, it shows the gateway (primary IP) address so my concern is that mail sent from that server would always show as sending from that primary gateway IP address and the reverse DNS record would not help. Any thoughts?
I have a router I have set up with a static IP and several alias static IP addresses in the usable range provided by the ISP (Comcast). On one of alias IP's, I forwarded port 25 to my Exchange server. I would like to set up a reverse DNS record (mail.domain.com) and tie it to that alias IP.
My question is....can I set up a reverse dns record to an alias IP on a router? When I do go to www.whatismyip.com, it shows the gateway (primary IP) address so my concern is that mail sent from that server would always show as sending from that primary gateway IP address and the reverse DNS record would not help. Any thoughts?
The IP that you get from "what is my ip" is the one that is assigned to you by your IP's last router before it gets to your modem. Anything that you set inside "your network" Wont affect this. Your modem uses NAT and that means that it assigns information tags (headers) (your IP addresss) to your outgoing information. IT is converted it IPV6.
A reverse DNS is of no use to you either as it is a database of domains and assigned IP addresses. to do that in your home would be fruitless.
A reverse DNS is of no use to you either as it is a database of domains and assigned IP addresses. to do that in your home would be fruitless.
RDNS should be done at the IP holders DNS. Host all the zones you like, but leave this to them.
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Thanks a million guys....just the info I needed!
You can do this with the ISP's DNS
But you run the risk of mail blocked by spam services