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• After a period of time, nslookup still works, but pinging, and an auto-refeshed website, fails.

  - by Mark Hurd

  Contrary to this SO question this is for a dotted name (gw.localnet.au), and it doesn't happen straight away. Only after some period of time (quite a long time, possibly days). In fact this is for my ADSL router and its internal IP address which I have named within the router itself and in my Windows Server 2003 Domain Controller DNS Service. Specifically, localnet.au is a Active-Directory-backed primary domain. In fact, an ipconfig /flushdns may fix the problem, but only after a while (about the time it took me to type in this question :-) ). That doesn't explain the root cause though... Manually transferred from stackoverflow.com

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• Simplest way to host a domain name just so i can forward it to a wordpress blog?

  - by Max Williams

  Hi all. I have a domain name, and a wordpress account. The domain name isn't hosted anywhere at the moment. I just want to set it up so that my wordpress blog uses the domain. According to the wordpress help page on this issue, i have to do the following: Update your domain’s name servers to the following. Make sure to remove any existing name servers that are already there. NS1.WORDPRESS.COM NS2.WORDPRESS.COM NS3.WORDPRESS.COM So, this is the only thing that i need a server for - if i even need a server at all? Is there a really simple way i can do this for free? Or for very cheap? I'm a bit ignorant about this stuff: i do rails coding but don't get involved in the really technical stuff to do with servers and dns and what have you.

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• Problem with the hosts file under windows 7

  - by martani_net

  I updated some entries in the hosts file "C:\WINDOWS\System32\drivers\etc" to make google for example point to 127.0.0.1 # Additionally, comments (such as these) may be inserted on individual # lines or following the machine name denoted by a '#' symbol. # # For example: # # 102.54.94.97 rhino.acme.com # source server # 38.25.63.10 x.acme.com # x client host 127.0.0.1 localhost ::1 localhost 127.0.0.1 google.com This works fine under windows Vista, but not under Widows 7. When I type google, it goes directly to Google's website. For info, I am not using a proxy server. I think there are some temporary DNS settings that must be flushed, but I don't know how, anyone knows how to fix this? Thank you.

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• Allowing users to use their domain name to their profile?

  - by cappuccino

  I have a web site / app where each user as a profile i.e.: mydomain.com/user1 mydomain.com/user2 mydomain.com/user3 etc How do I allow it so that a user can use their own domain name to go to their profile as a rewrite not a redirect. So when they go to lets say: user1theirdomain.com they see there profile at mydomain.com/user1, but I don't want a redirect, I want it so their domain is seen in the address bar. I imagine the user will need to adjust there domain name DNS to point to my server, what are the correct procedures and what would I need to do from there? Also I wouldn't want to manually adjust things, I'd like it so when they point their domain to my server, my app will check the domain name, lookup the domain in my database and then serve the correct content. Any ideas?

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• What is the world wide web? [closed]

  - by think123

  I don't know where to post this question, so please move it if necessary. Ok, so I've heard of how the professional hosting companies can create 'links' to the world wide web to register an unregistered domain. So that's where my question comes from. Is the world wide web a server to which servers link? Is it created by abstract linkage? I'm not sure. Also, what does it mean for the DNS to be updated throughout the whole world?

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• Cant get sub-domain created by Plesk working

  - by RN.

  Apache 2.2 CentOS Plesk 9.x I am using Plesk to manage my domain names on my virtual host.and GoDaddy for DNS I have created a new sub-domain blog using Plesk. I can see the httpd.include for example.com has a new virtualhost entry - blog.example.com I can also see folders have been created for the subdomain blog vhost\example.com folder But when I try to go to blog.example.com in the browser- I get an error - basically the host is not getting resolved. My site - example.com is working fine otherwise Any idea what could I be missing ? I did try restarting the apache web server as well

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• How to set up a subdomain in nsd3

  - by qliq

  nsd3 is very little-known but super-lightweight and stable DNS server which makes it a great alternative to bind9 be used on low-end boxes. There is a very good tutorial here that describe how to set it up. My problem is that I need to set up a subdomain subd1.example.com that will be severed on another VPS. I tried to add subdmn1.mymaindomain.com. IN 1.2.3.5 (Assuming that my destination IP is 1.2.3.5) Then I nsdc rebuild service nsd3 restart However the subdmn1.mymaindomain.com fails to resolve to the IP. Any clues will be much appreciated.

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• Changed domain A records for new static ip, but no mail

  - by Tim the Enchanter

  We have recently changed our ISP, I have changed the mail and mailserver DNS A records for our domain name to point to the new external static IP address assigned to the router by the new ISP (the MX record points to mail.<mydomain> as always) but I am not getting any email (though sending email works). Do I just have to wait will the change propagates? I am slightly concerned because I can connect to the web email service made visible through the new router which suggests that the mail.<mydomain> static I.P. address change has happened. Have I missed something?

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• How can I have two web roots on one server, so I can point two domains to two different roots?

  - by Daniel F. Dietzel

  I usually ask my n00b questions on Stack Exchange, but now I'm setting up a VPS and have a question. My usual site.com points to my VPS's IP xxx.xxx.xxx.xxx. Now I have a different domain, and I'd like to point that to another location, say xxx.xxx.xxx.xxx/myname. However, when I try to add that as an "A" record in the DNS settings it won't let me. FYI I'm using chicagovps.net with ubuntu 11.10 and Nginx. Thanks!

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• Should the hostname of my VPS point to the dedi IP of my Domain or to to a shared one used for new account creation?

  - by thomas

  I leased a VPS which I want to use to sell shared hosting. 3 IPs - I call them A, B and C here for simplicity. Actual setup is: A=NS1.mydomain.com; host.mydomain.com and is used to set-up new accounts in shared environment B=NS2.mydomain.com C=dedicated IP for mydomain.com (SSL secured) The more I read about DNS, the more I get confused; thus my question: Is this configuration "Good Practice", especially the hostname pointing to A rather than to C? And what would be a better alternative?

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• IIS doesn't respond to 127.0.0.1 (external IP works fine)

  - by Jordan

  I have an AWS web server - call it box.company.com. It's running IIS and if I visit http://box.company.com in a web browser (from any machine, including box.company.com), it responds correctly with our site. However, if I visit localhost/ or 127.0.0.1/ when I'm logged into box.company.com, I get a "couldn't connect to host" message. The hosts file has only one entry - the standard "127.0.0.1 localhost" line. Pinging 127.0.0.1 works fine. Pinging localhost correctly resolves to 127.0.0.1 and works fine. I've tried restarting IIS and restarting the DNS Cache. I had this problem once before, and restarting the server fixed it, but I'd like to know what's going on in case this happens again in the future.

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• Mirrored servers in data centers nationwide -- how?

  - by Sysadmin Evstar

  Mirrored servers in data centers nationwide -- how? I flunked my IT interview by getting this question wrong. I thought that in the various metropolitan areas, an "http://google.com" request goes to the ISP's DNS server, which somehow returns an IP address for one of several geographically-nearby http servers, and then something internally rolls over to the next available local Google server. But then, I could not explain where the table of available local Google servers is actually cached, or the details of the IP address rollover. Or how they could manually take some server out of the rotation, from anywhere. So, what should I be reading now so I can ace this question next time? Also, what daemons run on these machines 24/7 to keep all those mirrored database disks synchronized?

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• VPS with Debian Squeeze cannot forwward email - Name service error for name=gmail.com type=MX: Host not found, try again

  - by Domagoj

  I have postfix set-up on my Debian VPS, I can: send emails receive emails on my server But forwarding emails from my server to gmail does not work! I configured google's DNS through /etc/resolv.conf I can ping google.com and with dig I also find gmail MX records. But when my server tries to forward email to gmail (setup with /etc/aliases) I get the following error: postfix/smtp[20280]: 825E117BA8A80: to=<[email protected]>, orig_to=<[email protected]>, relay=none, delay=40, delays=0/0.01/40/0, dsn=4.4.3, status=deferred (Host or domain name not found. Name service error for name=gmail.com type=MX: Host not found, try again) What am I missing? Any help will be greatly appreciated!

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• CNAME lookup failed temporarily. (#4.4.3)

  - by klickverbot

  A friend of mine just told me that he can't send mails to accounts on one of my servers via the SMTP server provided by his ISP. The error message in the bounce he gets reads: Hi. This is the qmail-send program at aon.at. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. <[email protected]>: CNAME lookup failed temporarily. (#4.4.3) I'm not going to try again; this message has been in the queue too long. Any ideas what could be the reason for this? I have double-checked the DNS records for my domain, but they seem perfectly fine, and from any other mail servers I tested, delivery works flawlessly…

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• DNS lookup fails when forwarding to subdomain

  - by Kitaro

  In order to migrate to a new mailserver with little dns problems/downtime, I have set up a second postfix that is currently accessible on a subdomain mx record, eg. the main postfix accepts mail for [email protected] while the second postfix also accepts mail for [email protected]. I added a forwarding rule to postfix saying that postfix should forward mail destined for [email protected] to [email protected] (for regular local delivery) and to [email protected]. Local delivery still works as expected, but when trying forward the mail to the new mx, postfix appeds the domain part at the end of the forwarding address, resulting in [email protected], which of course fails and the mail bounces. Why does postfix mess with the alias name in that way and how can I turn that of?

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• DNSCache excesive memory usage Windows Server 2008 R2

  - by MikeT

  We are having an issue with the dnscache service where its memory usage is becoming excessive (~6GB) after a week or two. Restarting the service frees this memory but performing ipconfig /flushdns does not, an ipconfig /displaydns shows aprox 15-20 entries in the cache. We have checked and there appears to be aprox 150 DNS queries per second taking place but I would not expect this to have the effect of causing this memory issue. I have tried to search MSDN for hotfixes or bug reports but I could only find a reference to a memory leak in windows 2003. can anyone suggest how to proceed.

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• Point Subdomain to another application on another domain

  - by Juanu Haedo

  I'm not a very experienced Server Administrator and I'm trying to set up a new one I just got. I'm Using IIS7 and DNS Server What I need is that a url such as: mail.domainA.com points to www.domainB.com/webmail And I want to do this for all other domains... I want all of my domains that start with mail., point to www.domainB.com/webmail In short: I need a Subdomain to redirect to another URL... An improvement would be to let the subdomain as it is on the address bar on the redirection, if possible... Any help?

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• use local ip and maintain ssl warning free [duplicate]

  - by Timothy Clemans

  This question already has an answer here: Loopback to forwarded Public IP address from local network - Hairpin NAT 6 answers I have a public facing website for a doctor's office for accessing the medical record. I'm using SSL. The server is at the doctor's office. When I access the website on the same network as the server I want the DNS to point to the local IP address. I don't want to do a HTTP redirect to the local ip because of the scary SSL warning. What's the recommended way of doing this?

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• Mac OS X Server DNS Questions

  - by kreativefinally

  Just for a new mac server in the office, initially it was for my personal use as a web development box but now the boss wants me to set it up with all the bells and whistles it comes with. I'm having some issues with the following... Lets just say my business is example.com I want the server's actual address to be labs.example.com and accessible to the world. What do I need to set up at my domain registrar to let the domain know where to go, and what do I need to set up with my hosting company to make this work, and finally what do I need to set up in the server admin panel to get it to work. It seems that DNS not working is first hurdle I need to jump but the documentation around the internet is pretty terrible. Thank you community.

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• Mirrored servers in data centers nationwide -- how? [closed]

  - by Sysadmin Evstar

  Possible Duplicate: Mirrored servers in data centers nationwide — how? Mirrored servers in data centers nationwide -- how? I flunked my IT interview by getting this question wrong. I thought that in the various metropolitan areas, an "http://google.com" request goes to the ISP's DNS server, which somehow returns an IP address for one of several geographically-nearby http servers, and then something internally rolls over to the next available local Google server. But then, I could not explain where the table of available local Google servers is actually cached, or the details of the IP address rollover. Or how they could manually take some server out of the rotation, from anywhere. So, what should I be reading now so I can ace this question next time? Also, what daemons run on these machines 24/7 to keep all those mirrored database disks synchronized?

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• IIS6 Multiple SSL websites to a single HTTP website?

  - by docflabby

  Running a IIS6 server on Windows 2003. All the websites use ASP.NET I have a number of websites all running separate HTTP websites: www.domain1.com www.domain2.com www.domain3.com I have a separate HTTPS website www.secure.com These websites are all running on the same server. I now wish to intergrate the content of www.secure.com into each of the domains in a transparent way. Such that each website despite having its own SSL connection displays the same website. The complicatrion is www.secure.com needs to know which website the connection has come from to apply the appropriate branding. The idea behind this is to have only one website, and location, but it keeps the core website brand. https://domain1.com looks alot better from a marketing point of view (and avoids users getting confused about what our secure website is) SSL www.domain1.com/secure - displays www.secure.com (branded domain1) SSL www.domain2.com/secure - displays www.secure.com (branded domain2) SSL www.domain3.com/secure - displays www.secure.com (branded domain3) How would the best way of achieving this, i'm open to using additional software if necessery. Would a reverse proxy be sutible for this situation?

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• Forward differing hostnames to different internal IPs through NAT router

  - by abrereton

  Hi, I have one public IP address, one router and multiple servers behind the router. I would like to forward differing domains (All using HTTP) through the router to different servers. For example: example1.com => 192.168.0.110 example2.com => 192.168.0.120 foo.example2.com => 192.168.0.130 bar.example2.com => 192.168.0.140 I understand that this could be accomplished using Port Forwarding, but I need all hosts running on port 80. I found some information about IP Masquerading, but I found this difficult to understand, and I am not sure if it is what I am after. Another solution I have found is to direct all traffic to Reverse Proxy server, which forwards the requests onto the appropriate server. What about iptables? I am using a Billion 7404 VNPX router. Is there a feature that this router has that can accomplish this? Are these my only options? Have I missed something completely? Is one recommended over the others? I have searched around but I don't think I am hitting the correct keywords. Thanks in advance.

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• Can IIS (Ideally Azure) do SSL Proxying?

  - by Acoustic

  My team has been asked to add a new feature to a project we're working on, and none of can find authoritative details on whether it's possible with Windows/IIS. The short of it is that we're hoping to have customers update their DNS with a CNAME record to point their website to our server instead of theirs (they why's are trivial - it's what the app does on behalf of your site). We're using a reverse proxy with several custom modules to serve particular content from the original servers. So far everything works perfectly until we encounter SSL. Is there a way to have IIS serve up an SSL certificate from another server? In other words, is there a way to be a trusted man in the middle? I'm hoping that's possible so that we don't have to require all our clients to re-issue their SSL certs. Frankly, we don't want to have to manage hundreds of certs. I'd also like to avoid a UCC situation if there's a way to because it seems to require re-creating the cert each time a client is added. So, any pointers on proxying/hosting SSL (or even dynamic SSL hosting like http://www.globalsign.com/cloud/) would be appreciated.

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• nginx inserting extra characters in Multi-status reply body

  - by user125011

  Here's the setup. I've got one server running apache/php hosting ownCloud. Among other things, I'm using to do CardDAV contact syncing. In order to make things work with my domain I have an nginx server running on the frontend as a reverse-proxy to the ownCloud server. My nginx config is as follows: server { listen 80; server_name cloud.mydomain.com; location / { proxy_set_header X-Forwarded-Host cloud.mydomain.com; proxy_set_header X-Forwarded-Proto http; proxy_set_header X-Forwarded-For $remote_addr; client_max_body_size 0; proxy_redirect off; proxy_pass http://server; } } The problem is that when my phone does a PROPFIND on the server, nginx adds extra characters to the content body that throw the phone off. Specifically, it prepends d611\r\n at the front of the body and appends 0\r\n\r\n to the end of the content. (I got this from wireshark.) It also re-chunks the result. How do I get nginx to send the original content as-is?

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• Jboss unreachable/ slow behind apache with ajp

  - by Niels

  I have an linux server running with a JBoss Instance with apache2. Apache2 will use AJP connection to reverse proxy to JBoss. I found these messages in the apache error.log: [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header [error] ajp_read_header: ajp_ilink_receive failed [error] (120006)APR does not understand this error code: proxy: read response failed from 8.8.8.8:8009 (hostname) [error] (111)Connection refused: proxy: AJP: attempt to connect to 8.8.8.8:8009 (hostname) failed [error] ap_proxy_connect_backend disabling worker for (hostname) [error] proxy: AJP: failed to make connection to backend: hostname [error] proxy: AJP: disabled connection for (hostname)25 I googled around but I can't seem to find any related topics. There are people say this behavior can be caused by misconfigured apache vs jboss. Telling the max amount of connections apache allows are far greater then jboss, causing the apache connection to time out. But I know the app isn't used by thousands of simultaneous connections at the time not even hundreds of connections so I don't believe this could be a cause. Does anybody have an idea? Or could tell me how to debug this problem? I'm using these versions: Debian 4.3.5-4 64Bit Apache Version 2.2.16 JBOSS Version 4.2.3.GA Thanks

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