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No Reverse-DNS (PTR) is assigned to your IP


i was testing if my exchange is listed on

fortunately it is not listed there however i have a warning:

WARNING: No Reverse-DNS (PTR) is assigned to your IP
Please request your Admin or Provider to fix this.

how do i fix it ?


2 Solutions
Alan HardistyCo-OwnerCommented:
If you have not got Reverse DNS assigned to your IP Address, you need to call your ISP and request one e.g., mail.domain.com and it needs to resolve in DNS back to the IP Address that you are sending mail from.

Please have a read of my article to make sure the rest of your configuration meets RFC standards:

Glen KnightCommented:
You need to contact you ISP and ask them to confogure a reverse DNS entry for your IP address.  See my guide here for exchange DNS confoguration: http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_2370-Exchange-DNS-Configuration.html
You need to call your ISP and ask them to create you a PTR(reverse DNS) record
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Glen KnightCommented:
MegaNuk3, you really should get a faster mobile ;)
Muzafar MominCommented:
aks your ISP to assign DNS point for the Public IP that you are using to send mail outside
you should call your ISP and ask them to add the reverse DNS record for your IP address
Any idea when Iphone5 is coming out? I think it is to do with mobile signal whilst travelling on a train...
Glen KnightCommented:
June/July time I suspect ;)
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