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  • reaching 99.9999% uptime

    - by christopher-mccann
    I am currently developing a project which is mission-critical. The actual domain name is registered with 1 & 1 and I plan on purchasing DynDNS Custom DNS service (which has 5 different geographical locations for DNS) and then another secondary DNS service to make sure my DNS is as failover safe as possible. Does it matter that the registration is with 1 & 1 - are they a weak link in the chain? All I really use them for is to say that DynDNS is my primary DNS nameserver and then my secondary DNS is my other nameserver. I can transfer the registration to DynDNS - Im just not sure if it really matters or not. Thanks

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  • using own mail server with external domain and dns. Now have internal dns. dkim test not working

    - by mojotaker
    I am not very knowledgeable in this area, but have been able to make great head way. Now i am stuck I setup my own mail server, e.g mailbox.example.com. I had the domain dns point to my mail server in my office. i was able to set up everything working fine. such as dkim and spf records. Recently i decided to setup an internal dns server in the office so as to resolve some addresses for some development servers internally. Ok the problem now is my mail server is sitting on the internal dns server (the mail server is on the same box as the dns server) its still able to send and receive emails but not sure if dkim is working properly. when i try to do a dkim test "amavisd test keys" i get "invalid (public key: not available)" and i know that that means i have a dns issue. so what should i do? I am currently looking at my internal dns zonefile and i dont know what to do (i am using bind dns server on an ubuntu-server box). do i configure a dkim txt record on the local dns ? or is there a way to forward dkim "request" to the external dns ? or do i have this whole thing done wrong ? To be clear Basically my internal domain name is the same as my external domain name (i.e example.com) i have a mail server within my internal domain mailbox.example.com, that uses my external domain dns (external dns has been setup to point to my emailserver (which of course is now sitting behind my internal dns)) dkim (i dont think its working because it fails the dkim test") Need help in determing the proper setup What is the proper way to set this up ? thank you Update: Here is my local dns zone file ; ; BIND data file for local loopback interface ; $TTL 604800 @ IN SOA webserver.example.com. root.example.com. ( //dns and webserver on the same box 2012030809 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; @ IN NS webserver.example.com. @ IN A 192.168.1.117 @ IN AAAA ::1 ns IN A 192.168.1.117 www IN A xx.xx.xx.xxx // ip of external domain box (bluehost) work around to let local clients access website newsletter IN A xx.xx.xxx.117 // external ip address of local network mailbox.example.com. IN A 192.168.1.111 // internal ip of mailbox (mailserver webserver.example.com. IN A 192.168.1.117 //internal ip of a webserver

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  • AD-Integrated DNS failure: "Access was Denied"

    - by goldPseudo
    I have a single Windows 2008 R2 server configured as a domain controller with Active Directory Domain Services and DNS Server. The DNS Server was recently uninstalled and reinstalled in an attempt to fix a (possibly unrelated) problem; the event log was previously flooded with errors (#4000, "The DNS Server was unable to open Active Directory...") which reinstalling did not fix. However, while before it was at least showing and resolving names from the local network (slowly), now it's showing nothing at all. (The original error started with a #4015 error "The DNS server has encountered a critical error from the Active Directory," followed by a long string of #4000 and a few #4004. This may have been caused when a new DNS name was recently added, but I can't be sure of the timing.) Attempting to manage the DNS through Administrative Tools > DNS brings up an error: The server SERVERNAME could not be contacted. The error was: Access was denied. Would you like to add it anyway? Selecting yes just puts a SERVERNAME item on the list, but with all the configuration options grayed out. I attempted editing my hosts file as per this post but to no avail. Running dcdiag, it does identify the home server properly, but fails right away testing connectivity with: Starting test: Connectivity The host blahblahblahyaddayaddayadda could not be resolved to an IP address. Check the DNS server, DHCP, server name, etc. Got error while checking LDAP and RPC connectivity. Please check your firewall settings. ......................... SERVERNAME failed test Connectivity Adding the blahblahblahyaddayaddayadda address to hosts (pointing at 127.0.0.1), the connectivity test succeeded but it didn't seem to solve the fundamental problem (Access was denied) so I hashed it out again. Primary DNS server is properly pointing at 127.0.0.1 according to ipconfig /all. And the DNS server is forwarding requests to external addresses properly (if slowly), but the resolving of local network names is borked. The DNS database itself is small enough that I am (grudgingly) able to rebuild it if need be, but the DNS Server doesn't seem willing to let me work with (or around) it at all. (and yes before you ask there are no system backups available) Where do I go from here? As requested, my (slightly obfuscated) dcdiag output: Directory Server Diagnosis Performing initial setup: Trying to find home server... Home Server = bulgogi * Identified AD Forest. Done gathering initial info. Doing initial required tests Testing server: Obfuscated\BULGOGI Starting test: Connectivity The host a-whole-lot-of-numbers._msdcs.obfuscated.address could not be resolved to an IP address. Check the DNS server, DHCP, server name, etc. Got error while checking LDAP and RPC connectivity. Please check your firewall settings. ......................... BULGOGI failed test Connectivity Doing primary tests Testing server: Obfuscated\BULGOGI Skipping all tests, because server BULGOGI is not responding to directory service requests. Running partition tests on : ForestDnsZones Starting test: CheckSDRefDom ......................... ForestDnsZones passed test CheckSDRefDom Starting test: CrossRefValidation ......................... ForestDnsZones passed test CrossRefValidation Running partition tests on : DomainDnsZones Starting test: CheckSDRefDom ......................... DomainDnsZones passed test CheckSDRefDom Starting test: CrossRefValidation ......................... DomainDnsZones passed test CrossRefValidation Running partition tests on : Schema Starting test: CheckSDRefDom ......................... Schema passed test CheckSDRefDom Starting test: CrossRefValidation ......................... Schema passed test CrossRefValidation Running partition tests on : Configuration Starting test: CheckSDRefDom ......................... Configuration passed test CheckSDRefDom Starting test: CrossRefValidation ......................... Configuration passed test CrossRefValidation Running partition tests on : obfuscated Starting test: CheckSDRefDom ......................... obfuscated passed test CheckSDRefDom Starting test: CrossRefValidation ......................... obfuscated passed test CrossRefValidation Running enterprise tests on : obfuscated.address Starting test: LocatorCheck ......................... obfuscated.address passed test LocatorCheck Starting test: Intersite ......................... obfuscated.address passed test Intersite And my hosts file (minus the hashed lines for brevity): 127.0.0.1 localhost ::1 localhost And, for the sake of completion, here's selected chunks of my netstat -a -n output: TCP 0.0.0.0:88 0.0.0.0:0 LISTENING TCP 0.0.0.0:135 0.0.0.0:0 LISTENING TCP 0.0.0.0:389 0.0.0.0:0 LISTENING TCP 0.0.0.0:445 0.0.0.0:0 LISTENING TCP 0.0.0.0:464 0.0.0.0:0 LISTENING TCP 0.0.0.0:593 0.0.0.0:0 LISTENING TCP 0.0.0.0:636 0.0.0.0:0 LISTENING TCP 0.0.0.0:3268 0.0.0.0:0 LISTENING TCP 0.0.0.0:3269 0.0.0.0:0 LISTENING TCP 0.0.0.0:3389 0.0.0.0:0 LISTENING TCP 0.0.0.0:9389 0.0.0.0:0 LISTENING TCP 0.0.0.0:47001 0.0.0.0:0 LISTENING TCP 0.0.0.0:49152 0.0.0.0:0 LISTENING TCP 0.0.0.0:49153 0.0.0.0:0 LISTENING TCP 0.0.0.0:49154 0.0.0.0:0 LISTENING TCP 0.0.0.0:49155 0.0.0.0:0 LISTENING TCP 0.0.0.0:49157 0.0.0.0:0 LISTENING TCP 0.0.0.0:49158 0.0.0.0:0 LISTENING TCP 0.0.0.0:49164 0.0.0.0:0 LISTENING TCP 0.0.0.0:49178 0.0.0.0:0 LISTENING TCP 0.0.0.0:49179 0.0.0.0:0 LISTENING TCP 0.0.0.0:50480 0.0.0.0:0 LISTENING TCP 127.0.0.1:53 0.0.0.0:0 LISTENING TCP 192.168.12.127:53 0.0.0.0:0 LISTENING TCP 192.168.12.127:139 0.0.0.0:0 LISTENING TCP 192.168.12.127:445 192.168.12.50:51118 ESTABLISHED TCP 192.168.12.127:3389 192.168.12.4:33579 ESTABLISHED TCP 192.168.12.127:3389 192.168.12.100:1115 ESTABLISHED TCP 192.168.12.127:50784 192.168.12.50:49174 ESTABLISHED <snip ipv6> UDP 0.0.0.0:123 *:* UDP 0.0.0.0:500 *:* UDP 0.0.0.0:1645 *:* UDP 0.0.0.0:1645 *:* UDP 0.0.0.0:1646 *:* UDP 0.0.0.0:1646 *:* UDP 0.0.0.0:1812 *:* UDP 0.0.0.0:1812 *:* UDP 0.0.0.0:1813 *:* UDP 0.0.0.0:1813 *:* UDP 0.0.0.0:4500 *:* UDP 0.0.0.0:5355 *:* UDP 0.0.0.0:59638 *:* <snip a few thousand lines> UDP 0.0.0.0:62140 *:* UDP 127.0.0.1:53 *:* UDP 127.0.0.1:49540 *:* UDP 127.0.0.1:49541 *:* UDP 127.0.0.1:53655 *:* UDP 127.0.0.1:54946 *:* UDP 127.0.0.1:58345 *:* UDP 127.0.0.1:63352 *:* UDP 127.0.0.1:63728 *:* UDP 127.0.0.1:63729 *:* UDP 127.0.0.1:64215 *:* UDP 127.0.0.1:64646 *:* UDP 192.168.12.127:53 *:* UDP 192.168.12.127:67 *:* UDP 192.168.12.127:68 *:* UDP 192.168.12.127:88 *:* UDP 192.168.12.127:137 *:* UDP 192.168.12.127:138 *:* UDP 192.168.12.127:389 *:* UDP 192.168.12.127:464 *:* UDP 192.168.12.127:2535 *:* <snip ipv6 again>

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  • Correct configuration of a reverse Proxy with IIS 6.0 and IIRF for Hudson

    - by Durden81
    I have an Hudson build working on IIS 6.0 with reverse proxy (IIRF). In general it works but 2 errors are displayed in Hudson in the main configuration page called "Manage Hudson" (only if I connect through the reverse proxy): Your container doesn't use UTF-8 to decode URLs. If you use non-ASCII characters as a job name etc, this will cause problems. See Containers and Tomcat i18n for more details. It appears that your reverse proxy set up is broken This is my configuration of IIRF: RewriteLog C:\logsIIRF.txt RewriteLogLevel 2 IterationLimit 10 MaxMatchCount 10 RewriteEngine ON StatusInquiry ON UrlDecoding 0FF # add a trailing slash: RedirectRule ^/hudson$ /hudson/ [I] # Does the reverse Proxy ProxyPass ^/hudson/(.*)$ http://localhost:8080/hudson/$1 [I] ProxyPassReverse /hudson http://localhost:8080/hudson Any suggestion on how to get rid of those errors?

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  • Reverse Proxies and AJAX

    - by osij2is
    A client of ours is using IBM/Tivoli WebSEAL, a reverse-proxy server for some of their internal users. Our web application (ASP.NET 2.0) and is a fairly straightforward web/database application. Currently, our client users that are going through the WebSEAL proxy are having problems with a .NET 3rd party control. Users who are not going through the proxy have no issues. The 3rd party control is nothing more than an AJAX dynamic tree that on each click requests all the nodes for each leaf. Now our clients claim that once users click on a node in the control, the control itself freezes in such a way that they don't see anything populate. Users see "Loading..." message appear but no new activity there afterwards. They have to leave the page and go back to the original page in order to view the new nodes. I've never worked with a reverse proxy before so I have googled quite a bit on the subject even found an article on SF. IBM/Tivoli has mentioned this issue before but this is about all they mention at all. While the IBM doc is very helpful, all of our AJAX is from the 3rd party control. I've tried troubleshooting using Firebug but by not being behind the reverse proxy, I'm unable to truly replicate the problem. My question is: does anyone have experience with reverse proxies and issues with AJAX sites? How can I go about proving what the exact issue is? Currently we're negotiating remote access so assume for the greater part that I will have access to a machine that's using the WebSEAL proxy. P.S. I realize this question might teeter on the StackOverFlow/ServerFault jurisdictional debate, but I'm trying to investigate from the systems perspective. I have no experience with reverse proxies (and I'm unclear on the benefits) and little with forwarding proxies.

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  • Linux DNS Multi tenant

    - by spicyramen
    I need to setup a multi-tenant DNS solution in Linux DNS Server. Currently I serve multiple companies: Company ABC, Company XYZ, etc... I need to create a) Forwarder zone b) Reverse Forward Zone. I can easily create a Forward Zone with domain abc.com The challenge I have is that each of my customer components share the same IP address. Hence If I create the Reverse Forward Zone I end up with something like this: abc.com 1.1.1.1 host.abc.com xyz.com 1.1.1.1 host.xyz.com If I perform a reverse lookup on host.abc.com it works fine...but if I do a reverse lookup on 1.1.1.1 I get a load balance response of: attempt: host.abc.com attempt: host.xyz.com attempt: host.abc.com Any ideas? I want to add logic to the DNS configuration to handle DNS reverse lookup based on source machine and respond with right hostname. Workaround: Create multiple DNS but this is not scalable.

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  • Configuring Apache reverse proxy

    - by Martin
    I have loadbalancer server and edges. I am trying to configure reverse proxy in order to hide the backend servers PL1,2,3. PL 1,2,3 are not located in same subnet. They are located in different locations. PL1 Lb1 -> PL2 PL3 I tried to configure Apache reverse proxy but it is not sending request to PL1,2,3. Reverse proxy worked only when I configured apache to send request to local server on other port. ProxyRequests Off <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass /PL1 http://PL1server.com/ ProxyPassReverse /PL1 http://PL1server.com/ The above configuration did not worked. Could you help me to solve the issue. Or is there other proxy types like Squid,Socks5 to solve this issue. Does the reverse proxy fails if we use IP address or domain URL in ProxyPass and ProxyPassReverse ?

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  • IIS Reverse Proxy support for multiple protocols

    - by Abraxas
    I have a server 2012 machine running IIS. It's in my DMZ and I would like to use it to do reverse proxy for several services. I can get it to route traffic on port 80 to 2 separate internal servers running web apps but there are some issues when I try to forward SSH (not port 80/443) and then when I try to forward OWA (Micrsoft exchange's 'webmail' services) to the internal mail server I run in to issues with guides (like this: http://blogs.technet.com/b/exchange/archive/2013/07/19/reverse-proxy-for-exchange-server-2013-using-iis-arr-part-1.aspx) when they say to have all traffic forwarded to the server farm created for OWA. My question for you all is this - given that there is no more Threat Management Gateway (only runs on server 2008) and ISA 2006 is also dead - is it possible to support multiple types of reverse proxies with different protocols (ftp, ssh, web, ssl-web) in IIS, or would it be better to install a different DMZ OS like a nginx server and use linux firewalls + nginx reverse proxy? Thanks for any help!

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  • netconfig won't change DNS on opensuse 12.2

    - by Krystian
    I'm trying to update my dns servers after openvpn connection, but netconfig won't do that for me. Here's how I'm trying to do it [manually now]: /sbin/netconfig modify -v -i tap0 -s openvpn <<-EOF INTERFACE='tap0' DNSSERVERS='10.10.0.1' EOF And here's the verbose output: debug: lockfile created (/var/run/netconfig.pid) for PID 5530 debug: lockfile created debug: write new STATE file /var/run/netconfig//tap0/netconfig0 debug: Module order: dns-resolver dns-bind dns-dnsmasq nis ntp-runtime debug: dns-resolver module called debug: Static Fallback debug: Use NetworkManager policy merged settings debug: exec get_dns_settings: /var/run/netconfig/NetworkManager.netconfig debug: get_dns_settings: service 'NetworkManager' => rank '1' debug: get_dns_settings: DNS_SEARCHLIST_1='mydomain.com' debug: get_dns_settings: DNS_SERVERS_1='192.168.0.1' debug: exit get_dns_settings: /var/run/netconfig/NetworkManager.netconfig debug: write_resolv_conf: ' mydomain.com ' ' 192.168.0.1 ' debug: No changes for /etc/resolv.conf debug: dns-bind Module called debug: dns-dnsmasq Module called debug: nis Module called debug: Static Fallback debug: Use NetworkManager policy merged settings debug: exec get_nis_settings: /var/run/netconfig/NetworkManager.netconfig debug: exit get_nis_settings: /var/run/netconfig/NetworkManager.netconfig debug: set_nisdomainname: eth0 24 debug: set_nisdomainname: => yes debug: set_nisdomainname: old[]=, new[24]= debug: format_yp_conf called with : debug: Using static fallback debug: format_static[0] called debug: No changes for /etc/yp.conf debug: nis domainname '' is up to date debug: ntp-runtime Module called debug: Static Fallback debug: Use NetworkManager policy merged settings debug: exec get_ntp_settings: /var/run/netconfig/NetworkManager.netconfig debug: get_ntp_settings: NTP_SERVER_LIST='' debug: exit get_ntp_settings: /var/run/netconfig/NetworkManager.netconfig I've been trying to find something relevant on the web, but failed to do so. I have no other clue on how to progress with this issue. Any thoughts?

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  • DNS Does Not Register at Off-site Locations

    - by Russ Warren
    First of all, let me give you the specifics of our setup: Windows Small Business Server 2008 Domain w/ all applicable updates on the DC The DC does DHCP for the main site The DC does DNS for all sites 3 sites including our headquarters where the DC is located All sites are connected through OpenVPN SSL tunnels terminated by an Untangle box at each site The 2 remote sites us the Untangle box as a DHCP server for their subnet, which assigns the DC as the primary DNS server Collection of Windows XP and Windows 7 workstations connected to the domain Here's the issue: All of the workstations at the main site register with the DNS server on the domain controller fine. As they grab an IP from the DHCP server, it updates the DNS server with the new host record. I have 2 systems (each at different remote sites) that fail to register with the DNS server. I've attempted the following troubleshooting steps: Confirmed the network adapter is using the DC as a DNS server Confirmed 2-way traffic is possible between DC and workstation Verified the "Register with DNS server" setting was checked in the adapter properties Attempted ipconfig /registerdns and received no errors For the time being, I have setup a DHCP reservation for these systems and manually created a host record. This seems to work fine, but I need a solution for any new systems that go out there.

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  • DNS server not working?

    - by Behrooz A
    I just set up a DNS Server on my windows 7, called SimpleDNS I added a zone for example sag.com and defined www.sag.com and sag.com to 192.168.1.2 (my Network IP Address) . the problem is when I try to ping sag.com the SimpleDNS logs says that it answered the request with 192.168.1.2 , but the ping doesn't resolve anything . SimpleDNS logs: > 14:00:43 Request from 192.168.1.2 for A-record for www.sag.com > 14:00:43 Sending reply to 192.168.1.2 about A-record for > www.sag.com: 14:00:43 -> Answer: A-record for www.sag.com = > 192.168.1.2 14:00:43 -> Authority: NS-record for www.sag.com = mehr-pc nslookup : > C:\Users\Mehr\Desktop>nslookup www.sag.com DNS request timed out. > timeout was 2 seconds. Server: UnKnown Address: 192.168.1.1 > > DNS request timed out. > timeout was 2 seconds. DNS request timed out. > timeout was 2 seconds. DNS request timed out. > timeout was 2 seconds. DNS request timed out. > timeout was 2 seconds. > *** Request to UnKnown timed-out the DNS server IP is 192.168.1.2 , and Access point address : 192.168.1.1 what should I do?

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  • DNS server not working?

    - by Behrooz A
    I just set up a DNS Server on my windows 7, called SimpleDNS I added a zone for example sag.com and defined www.sag.com and sag.com to 192.168.1.2 (my Network IP Address) . the problem is when I try to ping sag.com the SimpleDNS logs says that it answered the request with 192.168.1.2 , but the ping doesn't resolve anything . SimpleDNS logs: > 14:00:43 Request from 192.168.1.2 for A-record for www.sag.com > 14:00:43 Sending reply to 192.168.1.2 about A-record for > www.sag.com: 14:00:43 -> Answer: A-record for www.sag.com = > 192.168.1.2 14:00:43 -> Authority: NS-record for www.sag.com = mehr-pc nslookup : > C:\Users\Mehr\Desktop>nslookup www.sag.com DNS request timed out. > timeout was 2 seconds. Server: UnKnown Address: 192.168.1.1 > > DNS request timed out. > timeout was 2 seconds. DNS request timed out. > timeout was 2 seconds. DNS request timed out. > timeout was 2 seconds. DNS request timed out. > timeout was 2 seconds. > *** Request to UnKnown timed-out the DNS server IP is 192.168.1.2 , and Access point address : 192.168.1.1 what should I do?

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  • Setting up DNS using VirtualMin/WebMin

    - by Nyxynyx
    I am moving from a cPanel server to one where I've installed VirtualMin. The LAMP stack and the website files have been setup properly and I can access the website by its IP address. Problem: Now its time to point my domain mydomain.com to my new server. After reading many sites describing setting up bind and master zones, I am pretty confused as to what to do, especially coming from a cPanel server where its really simple to set this up. Attempt Tried to register my nameservers ns1.mydomain.com and ns2.mydomain.com at my domain registrar, but I am missing the IPs I need to point these nameservers to. Should I set ns1.mydomain.com to the IP addres of my web server, and not register ns2.mydomain.com? When specifying the DNS for mydomain.com, the first one I've set it to ns1.apadment.com. On the manager/admin page of my webhost provider, I am given the option to create a secondary slave DNS, which I assigned to the IP address of my server. Though I am not sure how the slave DNS will copy the info from my web server? I have assigned this secondary DNS ns.hostprovider.com as the second DNS for mydomain.com I tried creating a Virtual Server under Virtualmin, but it seems to mess up Apache's DocumentRoot for the site by creating and enabling a new vhost file that ends with .conf. I edited the .conf file to point DocumentRoot back to where its supposed to be /var/www/mydomain instead of /user/mydomain.com I believe the next step is to setup the zone. Virtualmin has already created a Master Zone with 8 different addresses (www.mydomain.com, ftp.mydomain.com...). Under Nameservers, there are already 2 records. One is the hostname (random name given by hostprovider, ns12345.ip123-123.net), the other is the secondary slave DNS provided by the host provider. Does having BIND running on my web server makes the server the master DNS? Thank you!

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  • Cache updates when migrating DNS from one provider to another

    - by JohnCC
    This may be a Windows DNS specific question or a general DNS best practice question - I'm not sure! We migrated our 3rd party DNS provision from provider A to provider B. I noticed that our internal recursive windows DNS servers still had NS records cached for our domains pointing to provider A's servers, even though I changed the nameservers with our registrar several days ago, and even though selecting the properties of the cached records showed a TTL of 1 day. After 24 hours when the NS records in this cache have expired, will the DNS server go back to the TLD server for an update on the authority, or will it go by preference to dns1.providera.com since that is what it has cached? In this case I arranged to leave Provider A's servers up for a week to allow changes to propagate, so dns1.providera.com is still active and would still provide NS and SOA records that said that dns1.providera.com. was in charge of this domain. Given this fact, would the Windows DNS server ever go back to the TLD and pick up the authority changes, or would it just assume all was well and renew timestamps on its cached NS records? I wonder what would be the best approach to ensuring that caches pick this up. Should I:- (1) Leave Provider A's servers in place and active and wait for caches to catch up ... basically what we're doing now which seems to have issues - perhaps specifically for Windows servers, or perhaps more widely. (2) Leave Provider A's servers in place but change the NS and/or SOA information they provide to tell caches that new servers are in charge. (3) Remove Provider A's servers after 2*TTL to force remaining caches to update. The issue with (2) is that on Provider A's system I can't seem to change the NS or SOA information to anything other than their servers. The issue with (3) is that I'm not sure how a DNS server would behave in this case. When it couldn't reach the cached name servers, would it flush its cache and try a full recursive lookup, or would it just return an error, forcing the user to clear the cache manually? Thanks in advance!

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  • Does NetworkSolutions have a good DNS service?

    - by joxl
    I'm recovering from a DNS disaster and I need some good advice on an alternate solution. My company owns a domain name through NetworkSolutions. Our website is hosted by another company who also maintains our DNS records. Our email is hosted by Google Apps, and the MX records are maintained through the afore-mentioned website/DNS host. Yesterday our website/DNS host had a serious hiccup in some software and completely overwrote all of our DNS records with invalid values; successfully pointing our domain and MX records at the wrong servers. Unfortunately it wasn't caught until it had time to significantly propagate. On top of that, it wasn't fixed until several hours later, combine that with a long TTL on the records; we have customers who are still bouncing emails. Anyhow, I am now completely terrified of this company's ability to do a good job, so I am considering switching to NetworkSolutions for our DNS service. I need the ability to configure A, CNAME, MX, and TXT records, preferably with a nice user interface (our current provider has a poor UI and doesn't support TXT records). Is NetworkSolutions a recommended DNS host? I am a little biased in their direction because the service will be free since we already pay them for our domain name. However I'm curious what others have experienced with their service.

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  • DNS stops working occasionally

    - by Andrey
    I have tried using Google DNS and the one provided with DHCP. At some point my PC (Windows 7) stops resolving domain names, but DNS server is perfectly pingable. What can be the reason? Thanks! Edit: It is really weird. It can stop and start working in few seconds. The problem is that DNA requests are timing out, and the problem is that the DNS server is pingable at the same time. I can't understand how this could be possible and what might be an issue. C:\Windows\System32\drivers\etc>nslookup google.com DNS request timed out. timeout was 2 seconds. Server: UnKnown Address: 8.8.8.8 Non-authoritative answer: Name: google.com Addresses: 173.194.78.102 173.194.78.101 173.194.78.139 173.194.78.113 173.194.78.100 173.194.78.138 C:\Windows\System32\drivers\etc>nslookup google.com DNS request timed out. timeout was 2 seconds. Server: UnKnown Address: 8.8.8.8 DNS request timed out. timeout was 2 seconds. DNS request timed out. timeout was 2 seconds. *** Request to UnKnown timed-out

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  • Bind: dns not 'spreaded'

    - by realtebo
    I've elfoip.net with bind $ whois elfoip.net | grep 'Name Server' Name Server: NS.ELFOIP.NET I need elfoip.net be able to serve third levels domain, like mickymouse.elfoip.net, etc... Yes, I'm trying to create an other useless dyndns clone. i've added some third level as A RR. Eg: executing this from the server itself $ dig @localhost mattinauno.elfoip.net ;; ANSWER SECTION: mattinauno.elfoip.net. 60 IN A 192.81.221.113 I was expecting in one or two days, from my pc i can digit in browser mattinauno.elfoip.net and get page a 192.81.221.113 But this is not happening. Are there any prerequisites to satisfy to allow dns of my isp to be able to forward dns resolution of *.elfoip.net to MY dns ? (Or to ask to him and then cache ?) TTL of zone is set a 5m I've not AllowQuey directive, is it necessary for other dns to cache from mine ? I've cheched the zone with bind utility named-checkzone but no error detected. How to diagnose why other dns doesn't take in account RR from mine ? from my home pc dig @ns.elfoip.net mattinauno.elfoip.net ;; ANSWER SECTION: mattinauno.elfoip.net. 60 IN A 192.81.221.113 ;; AUTHORITY SECTION: elfoip.net. 300 IN NS ns.elfoip.net. but dig @8.8.8.8 mattinauno.elfoip.net give no answers Whole zone file: note I've used nsupdate, so this file has been re-edited and re-formatted from this utility ! root@mirko:/var/named# cat elfoip.net.db $ORIGIN . $TTL 300 ; 5 minutes elfoip.net IN SOA ns.elfoip.net. hostmaster.elfoip.net. ( 2013062314 ; serial 3600 ; refresh (1 hour) 600 ; retry (10 minutes) 86400 ; expire (1 day) 60 ; minimum (1 minute) ) NS ns.elfoip.net. A 109.168.99.6 $ORIGIN elfoip.net. $TTL 60 ; 1 minute google A 173.194.35.56 maiscai A 192.81.221.113 mattinadue A 192.81.221.113 mattinauno A 192.81.221.113 $TTL 300 ; 5 minutes ns A 109.168.99.6 $TTL 60 ; 1 minute prova A 208.67.222.222 prova2 A 13.23.34.45 A 13.23.34.46 www CNAME elfoip.net. EDIT: added named.conf.local zone "elfoip.net" { type master; // file "/etc/bind/elfoip.net.db"; file "/var/named/elfoip.net.db"; allow-update { key elfoip.net ; }; }; EDIT: I've no setup list-on directive *EDIT Added a TCPDUMP after [email protected] wwww.elfoip.net from a machine which uses my company internal dns, who allow recursive query. root@mirko:~# tcpdump -i eth0 'port 53' tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes 11:57:23.293611 IP host9-210-static.22-87-b.business.telecomitalia.it.45958 > mirko.elfoip.net.domain: 61337+ A? www.elfoip.net. (32) 11:57:23.294114 IP mirko.elfoip.net.domain > host9-210-static.22-87-b.business.telecomitalia.it.45958: 61337* 2/1/1 CNAME elfoip.net., A 109.168.99.6 (95) 11:57:23.294554 IP mirko.elfoip.net.59571 > google-public-dns-a.google.com.domain: 45851+ PTR? 9.210.22.87.in-addr.arpa. (42) 11:57:23.330444 IP google-public-dns-a.google.com.domain > mirko.elfoip.net.59571: 45851 1/0/0 PTR host9-210-static.22-87-b.business.telecomitalia.it. (106) 11:57:23.331181 IP mirko.elfoip.net.44171 > google-public-dns-a.google.com.domain: 33339+ PTR? 8.8.8.8.in-addr.arpa. (38) 11:57:23.439405 IP google-public-dns-a.google.com.domain > mirko.elfoip.net.44171: 33339 1/0/0 PTR google-public-dns-a.google.com. (82) 11:57:31.350654 IP host9-210-static.22-87-b.business.telecomitalia.it.30108 > mirko.elfoip.net.domain: 38269 [1au] A? ns.elfoip.net. (42) 11:57:31.351117 IP mirko.elfoip.net.domain > host9-210-static.22-87-b.business.telecomitalia.it.30108: 38269* 1/1/1 A 109.168.99.6 (72) If i dig @8.8.8.8 www.elfoip.net, NOTHING happens in dump log !

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  • How to make Firefox use TCP for DNS

    - by miniBill
    I want to use TCP for DNS, to bypass my ISP's slow and broken DNS servers. I'm not using (and don't want to use) a proxy. Note: I want to use DNS over TCP because if I use it over udp, no matter what server I set, I get answers from my ISP's DNS. Notice that I will fiercely downvote whoever suggests: programs to do TCP over DNS, the setting in about:config to make DNS go over the proxy too: I'm not using a proxy, use another DNS: I've already set up Google as my DNS, but I get intercepted. Example of what I mean by saying intercept: $ dig @8.8.8.8 thepiratebay.se ; <<>> DiG 9.8.1 <<>> @8.8.8.8 thepiratebay.se ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24385 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;thepiratebay.se. IN A ;; ANSWER SECTION: thepiratebay.se. 28800 IN A 83.224.65.41 ;; Query time: 50 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Sun Sep 16 22:51:06 2012 ;; MSG SIZE rcvd: 49 $ dig +tcp @8.8.8.8 thepiratebay.se ; <<>> DiG 9.8.1 <<>> +tcp @8.8.8.8 thepiratebay.se ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15131 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;thepiratebay.se. IN A ;; ANSWER SECTION: thepiratebay.se. 436 IN A 194.71.107.15 ;; Query time: 61 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Sun Sep 16 22:51:10 2012 ;; MSG SIZE rcvd: 49 If it matters, I'm using Firefox 14 on Gentoo Linux.

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  • Opensource Dns based incoming Load balancing ?

    - by sahil
    Hi, I am using Linkproof device for incoming load balancing based on which is based on dns. For example my linkprrof have 3 isp link.... it also act as a dns sevrer for my sites...so when someone connect me by using my dns name my linkprrof give them ip from 3 isp which ever is responding fast. so is there any same kind of open source solution for dns based incoming load balance is possible ??? sahil

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  • do i need a dns server?

    - by ajsie
    i have set up a website (lamp) in a vps from a hosting company. im wondering, in what circumstances would i want to set up a dns server on my vps? cause from what i have learned basically a dns just converts domain names into ip addresses. and at the moment my domain provider is doing this in their dns. so in what situations do i benefit from setting up an own dns server?

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  • How to have Windows Server DNS use hosts file to resolve specific host names

    - by user41079
    Hello, everyone, I'm facing a small problem with Windows Server 2003 DNS service. In my corporation, I'm running Microsoft DNS server(172.16.0.12) to do name resolution to my company intranet(domain name ends in dev.nls. resolving to IP 172.16..), and it is also configured as a DNS forwarder to forward other domain names(e.g. *.google.com , *.sf.net) to Internet real DNS servers. This internal DNS server never tends to serve users from outside world. And, we are running a mail server(serving incoming mail for a real Internet domain @nlscan.com) inside company firewall which can be accessed in either way: by connecting to 172.16.0.10 from within intranet. by connecting to mail.nlscan.com(resolved to 202.101.116.9) from Internet. Note that 172.16.0.10 and 202.101.116.9 is not the same physical machine. The 202 one is a firewall machine who do port forwarding of port 25 and 110 to intranet address 172.16.0.10 . Now my question: If users inside corporate LAN want to resolve mail.nlscan.com, it resolves to 202.101.116.9. That's correct and workable, BUT NOT GOOD, because the mail traffic goes to the firewall machine then bounces to 172.16.0.10 . I hope that our internal DNS server can intercept the name mail.nlscan.com and resolve it to 172.16.0.10 . So, I hope that I can write an entry in "hosts" file on 172.16.0.12 to do this. But, how can Microsoft DNS server recognize this "hosts" file? Maybe you suggest, why not have intranet user use 172.16.0.10 to access my mail server? I have to say it is inconvenient, suppose a user(employee) works on his laptop, daytime in office and nighttime at home. When he is at home, he cannot use 172.16.0.10 . Creating a zone for nlscan.com on our internal DNS server is not feasible, because the name server for nlscan.com domain is on our ISP, and it is responsible for resolving other host names and sub-domains under nlscan.com . Thank you in advance.

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  • Protecting DNS entries from duplicate hostnames entering network

    - by Aszurom
    Given a Windows domain, with DNS provided by a server on that domain, I am curious about what happens if a guest joins the network attempting to use the same hostname as an existing server, and then tries to register that hostname in DNS with its DHCP address. Can this potentially be disruptive to the server, or is Windows DNS smart enough to spot a duplicate hostname and deny an auto-register request from that host? What actions can be taken to ensure that DNS for a hostname cannot be altered?

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  • Web site DNS configuration Without using hosting nameservers

    - by user39110
    Hi, i am publishing my website(www.muratturan.com) by using godaddy's "Total DNS Control". My configuration like this: 1-) I configured my domain to total dns control by setting nameservers to total dns control's. 2-) In total dns control panel i set A host to directly my VPS's ip address. 3-) Also i configured mx records to google apps. Everythings looks good but i am thinking that is this technuqie has any negative effects ? Thanks

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  • Windows 7 DNS stuck at manual

    - by Populus
    I am using the google dns servers most of the time, but for one particular wifi connection it blocks that ip so I have to revert back to automatically choosing DNS... The problem now is everytime I connect to this network, I have to change it back to automatic DNS manually (ironically), it's stuck on using the google DNS by default... It's a trivial problem, but would be fab if someone can help me out here...

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  • DNS cache-on-demand server in Win7

    - by Andrew Heath
    I live in a country that enjoys manipulating DNS entries for fun and profit. For various reasons, I cannot surf with a VPN running 100% of the time. Because some sites are only blocked via DNS spoofing, it would be very handy if I could run a local DNS server that I could update on command during active VPN sessions. Is this granularity possible on Win7? Most of the DNS server related posts on SU are regarding the more config-friendly Linux platforms...

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