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Windows 2008 DNS Server Error 5504

Posted on 2010-08-18
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Last Modified: 2012-05-10
Hello,
On my 2008 windows server standard r2 i am getting this erro 5504 being logged several times per day. This is the only domain controller and dns server in the domain. The server is not set up for any forwarders and just uses the root hints.

I have seen several articles saying could be firewall, you should set the forwarder to your isp. But none of these people seem so definte in their answer so i will try this.

Here is one of the errors.

The DNS server encountered an invalid domain name in a packet from 144.160.20.46. The packet will be rejected. The event data contains the DNS packet.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Question by:valmatic
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by:valmatic
ID: 33465056
i do have a fireall rule allowing any dns request from my dns server to the internet out allowed.
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by:valmatic
ID: 33466302
anyone home
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Expert Comment

by:Rich Weissler
ID: 33469716
Yep -- at home, and not at work.  Takes longer to respond at home.  ;-)

Those messages are DNS Spoofing protection messages:
http://en.wikipedia.org/wiki/DNS_cache_poisoning

Most likely the errors are being caused by other people's DNS servers which aren't configured correctly, although there is always a chance they are being generated by an intentional malicious attack against your system.  The good news is that you are receiving log messages rather than having your DNS hijacked.
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Darius Ghassem earned 300 total points
ID: 33469920
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by:valmatic
ID: 33474587
thanks guys let me read all these articles and ill get back to you!
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by:valmatic
ID: 33474691
so does this mean i should set up a forward to my ISPs DNS server instead of it going straight for the root hints? What do you guys think?
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by:Rich Weissler
Rich Weissler earned 200 total points
ID: 33474792
Unless there are extenuating circumstances -- yes, you should set up a forwarder to your ISPs DNS server.
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by:valmatic
ID: 33474890
everyting works fine now i think with the one dns server and using the root hints, but it seems like these articles say i should use a isp dns server as a forwarder instead? But do you think i should not?
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by:valmatic
ID: 33474929
also what do you think about this reg tweak that i saw when i was orignally searching for this 5504 error message?
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by:valmatic
ID: 33474930
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by:Darius Ghassem
ID: 33476045
DNS Forwarders should be used.
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