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Dns Error 904 Port Unreachable

Proposed as answer by Ace Fekay [MCT]MVP Thursday, December 06, 2012 9:01 PM Thursday, December 06, 2012 6:18 PM Reply | Quote 0 Sign in to vote David, Thankyou for the IN A ### (snip) ;; ADDITIONAL SECTION: 599044 IN A 599044 IN AAAA 2001:503:ba3e::2:30 599044 IN A 599044 IN A 599044 IN A Since 1 server in the list was not responsive, it cause delays for name resolution until the timeout setting was change or the unavailable name server was removed from the list We migrated our DNS servers from Win2003 to Win2008 R2 not long ago.

It will go to the second entry ONLY if a query to the first entry returns a NULL (doesn't) respond.If the first entry returns an NXDOMAIN (record doesn't exist), it will I disabled all the profiles (Domain, Public and Private), the symptoms are still there. The indicated port process was either not running or was swapped out. Is the port in the router configured with the correct address mask value?

Thursday, August 29, 2013 7:49 PM Reply | Quote Microsoft is conducting an online survey to understand your opinion of the Technet Web site. Merry X-Mas Oliver Welter « Return to PowerDNS | 1 view|%1 views Loading... Privacy | Sitemap © 2016 SAVVIUS, INC All registered and unregistered trademarks are the sole property of their respective owners MyPeek | Forum | Blog | Contact Us | kinds of people still face data security is not a bad way to determine if there is not what is going to be repaired or not.

equity78 posted, Likes: 26 Virtuality Domains and Discussion dnvia posted, Likes: 20 $40K Annual Profit from... Already a member? Edited by Ace Fekay [MCT]MVP Wednesday, August 15, 2012 3:50 PM - clarification Wednesday, August 15, 2012 3:50 PM Reply | Quote 0 Sign in to vote David, The client side For example, when I allow it in an ASA, I must enter the following: For the CiscoPix with IOS v5 and newer, or ASAto 8.2(2) - the ASA 8.3(4) and newer

Example, take 2 servers with following config: 1. Thursday, August 23, 2012 2:57 PM Reply | Quote 0 Sign in to vote Dealing with this same issue - did you find a solution?Jeff Graves, ORCS Web, Inc. The frame was discarded and the ICMP message was returned to the originator. Please read my blog that specifically explains the algorithm: WINS NetBIOS, Browser Service, Disabling NetBIOS, & Direct Hosted SMB (DirectSMB).

Basically it's a workaround to help DNS. Traceroute seems to be the only program affected right now and there was no point dedicating resource to resolve this issue, at least for our entreprise point of view. Replies: 4 Views: 3,074 Thread Status: Not open for further replies. Furthermore, the intended destination host was on-line and willing to accept the frame into its communications buffer.

Not the answer you're looking for? additional hints It's provided some insight but I am not that familiar with low-level TCP/IP stuff so I don't know what to make of it all. Domain Auctions .CO Auction: + Others. Good idea though!

Can anyone give me any pointers on troubleshooting BIND for this issue? Windows 2003 servers are not showing any sign of this particular behavior 2. Going to win2k8 DNS server traceroute -q 6 devpwdc01 traceroute to devpwdc01 (, 30 hops max, 40 byte packets 1 ( 0.123 ms 0.077 ms 0.082 ms 0.076 ms 0.076 What can be the problem?

After doing that, I noticed that DNS resolution on servers using UNIX/Linux based OS had some issues initiating connections from time to time when DNS was required. Other requests for website coming from windows workstation are host addr only... 4912 9:39:57 AM 21/08/2012 2197.6495625 dns.exe DNS DNS:QueryId = 0xD991, QUERY (Standard query), Query for of Monday, August 13, 2012 3:02 PM Reply | Quote All replies 0 Sign in to vote Check the rules on: Windows Firewall with Advanced Security Monday, August 13, 2012 7:43 PM traceroute -T -n traceroute to (, 30 hops max, 60 byte packets 1 0.600 ms 0.891 ms 0.892 ms 2 0.884 ms 1.237 ms 1.565 ms 3

Yes, my password is: Forgot your password? PowerDNS Search everywhere only in this topic Advanced Search Powerdns 904 Port unreachable Denic Classic List Threaded ♦ ♦ Locked 3 messages ixlrobert Threaded Open this post in threaded view ♦ Default was 4) Changing this fixed the slow resolution problem that I had but did not fixed my traceroute problem.

Get the network monitor installed and see what happens when the queries run.

So the question is, what do I need to do? Years ago prior to EDNS0 support, ifthe UDP response is greated than 512 bytes, it would revert to TCP to get the whole answer. James Iles posted, Likes: 23 Domain Data: 98% of Sequoia... Since the DNS issue was fixed and the cause was found, we did not investigate further into the problem since I did not noticed any other problem on the networking side.

It's not based on pingability. In addition to this text, he has authored and co-authored nine other textbooks including: Computer Science: A Structured Approach Using C, Computer Science: A Structured Approach Using C++, and Data Structures: Here's a list of phone numbers if you choose this option:;EN-US;PHONENUMBERS . After activating ipv6 additional processing, the 106 error also was gone and anything is working fine now.

This was noticed right after the migration from Win2k3 to Wind2k8. Yeah, I know that linking DNS performance with traceroute was a stretch... If you configure it right the hosting provider's DNS should answer queries independently of whether it's already the "primary" nameserver (pointed by 123-reg) or not. This could cause a delay as well until it switches to the secondary IP on the DNS server list.

If the content you are looking for has already been migrated we will automatically redirect you. Hi Robert, We are facing the same trouble, is there a solution ? Monday, August 20, 2012 2:39 PM Reply | Quote 1 Sign in to vote David, I am not sure. Style Style: Responsive, limited width View Desktop Version Time: 6:06 AM Status Advertise Contact Us Help Top RSS Terms and Policies Privacy Policy Copyright © 2003-2016 NamePros Loading...

Looking forward toan update with what theyfind.Ace Fekay MVP, MCT, MCITP/EA, MCTS Windows 2008/R2 & Exchange 2007, Exchange 2010 EA, MCSE & MCSA 2003/2000, MCSA Messaging 2003 Microsoft Certified Trainer Microsoft If something comes up, I will update this post.... Remember, a Port Unreachable message says that the process that is using a Port in the Layer 4 protocol is missing, but the protocol itself is working. The idea is to check for anomalies or errors reported directly by the hosting provider.

By default nslookup, justt like the client side resolver service, uses UDP. If, however, the router ARP's and receives no answer then it sends a Destination Unreachable - Host Unreachable message back to the originator. Edited by tyler55 Wednesday, August 15, 2012 1:07 PM Wednesday, August 15, 2012 1:06 PM Reply | Quote 0 Sign in to vote It will only use the secondary if the Host Unreachable - Sent by the last router in the path to an existing network.