Saturday, July 28, 2018

Got a noob question about dns and reverse dns

My company changed providers and got all new ip space. Everything’s working on our new ip space but I noticed something odd by chance yesterday. The reverse dns for all our new ips does not match the forward entry

For example if you do nslookup mycompany.com you get back our correct IP address

But if you do nslookup x.x.x.x (our new ip) it shows something like ispsname-static-bunchofotherjunk

Basically forward and reverse don’t match. What problems can that cause? The migration happened months ago, and nothing is broken far as I can tell.

Basically if this causes no problems I’d like to leave well enough alone.



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