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troubleshooting Question

Same Reverse DNS entry for two IPs

SHALINDRA asked on
8 Comments1 Solution859 ViewsLast Modified:

I have a query about a Reverse DNS and need a help of an expert.

Basically we have two mail servers with two public IPs.

A.A.A.A already got Reverse DNS entry with the leaseline provider for the domain mail.abc.co.uk.

Recently we have experience sending emails to AOL from public IP B.B.B.B and AOL has asked us to create a Reverse DNS entry to the IP B.B.B.B.

My query is, will it be a problem if I create a rDNS for B.B.B.B with the mail.abc.co.uk as there is an IP already (A.A.A.A) with a rDNS entry for the same domain. So if I asked other lease line provider to create an entry our scenario will be as the below.

Public IP     Reverse DNS Domain
A.A.A.A        mail.abc.co.uk
B.B.B.B        mail.abc.co.uk

My concern is whether two rDNS IP entries for the same domain will categorise our emails as spam and it will stop receiving emails to us?

Can an expert help me on this please?

Thanks in advance
Avatar of Ernie Beek
Ernie BeekFlag of Netherlands imageSenior infrastructure engineer
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