Server :: Bind9 - SERVFAIL On Some Internal Domains Not Others
Jul 24, 2011
I'm running bind9 on Debian 6. I have a primary domain, 44kg.net, fully configured and working dynamically (the server also runs DHCPd and updates the DNS records properly).
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To access my externally-facing website, which has a blog and a forum which are keyed to the external domain, I set up the domains in bind so they would resolve to the server's internal IP. This worked great for a few months, then inexplicably ceased working. I didn't touch anything, but it coincided with our router dropping its VLANs. I've moved the server to a different location and it's still not working properly. Whenever I try to lookup the external domains, I get SERVFAILs. This is annoying because the internal domain is fully working and I copied the basic settings.
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Sep 25, 2010
I have a white slate centos 5.5 installation on a virtual box at Media Temple (one of their new VE servers). I am trying to create a development environment where I can have Bind9 serve up one set of zone files to me and other developers on the internal network and another set of zone files to external requests (ie... using the views feature). I would like to be able to develop for sites for which the dns is not yet pointed at my server. The network is created by having the VE server be an OpenVPN server, and connecting my client box to the server (my mac - 10.8.0.6 / my ve server 10.8.0.1).
I have the connections working fine, I have also been able to route all network traffic from my mac through the vpn to the server. For some reason, I cannot get the DNS server on the ve server to serve me an internal view zone file. When my vpn is on, I cannot ping or navigate to any web pages from my mac. I think this is because my ve server is not setup as a dhcp server and the ip tables are not setup to allow all internal requests to use the server to go get web pages.
I cannot view-ping anything else from my mac/client when on the vpn, I can successfully ping any website my ve is authoritative for. This tells me that my ping is obviously going over the vpn, and thus an internal request, but the external zone file is still served up. The following is my named config.
acl "lan_hosts" {
10.8.0.0/24;
127.0.0.1;
};
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Apr 23, 2010
I have several web servers running apache on my LAN. Each internal server hosts a number of domains.I would like to make these available to the internet and make sure they all get to use port 80 and 443.My idea was to put Apache on the firewall and have all http(s) traffic from the Internet to my firewall be redirected by Apache to the different internal apache servers. This, in theory, would allow me to keep the standard http(s) port.
Can this be done? I was thinking of mod_rewrite and mod_redirect but in all honesty, I'm a little at a loss on where to start.Can someone point me to relevant documentation or give me the basic idea on how to start?
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Aug 6, 2010
Two exchange servers internally. One is setup for example.com (192.168.1.10) and the other is setup for example2.com (192.168.1.20) Both are behind a single public IP.
I want to use postfix to sit in front of the two exchange servers. Postfix will accept mail for both domains and relay to the appropriate server. I have postfix installed with only defaults at this point.
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Jan 9, 2011
uslookup command is giving me an error.otherwise dns is working ok.when i try to look for server from client using.
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I got the following error :-
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But
Quote:
Is working fine.
I think there should be problem in reverse zone file so i am posting my reverse zone file.
Code:
What is meaning of this error?
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Jul 29, 2010
I've been forced to setup a dns server on centos as the sys admin is away. I've installed Bind with chroot and its working fine, however I cant seem to get my domain to work. Below is the configuration
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Jul 10, 2010
especially to ubuntu server 8.04 because it doesnt use a GUI. Now my question is on how to insert IP address in configuring DNS server using bind9. Actually i'm using this guideBut i m not sure on how to insert IP addresses on the primary master and secondary master. Should I insert the Ip address that i found when i type ifconfig ? or Should I assign a new IP address.I have set up a webserver, DNS server, File server and mail server on a virtual box. For now, at first, im working with the DNS server or should I work with the web server first?what should I do?
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Jul 9, 2010
I've tried reading several tutorials on setting up a domain name with bind9, but I've never managed to get one working.
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Jun 10, 2011
I have worked with servers before now, but not DNS nameservers and I would like help setting up Bind9 on my Ubuntu 11.04 Server.
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Jun 10, 2011
I have a web server on my local network with a couple domains facing the internet. When I visit these domains from within the network I'm directed to my routers configuration page due to hairpin NAT.
So I installed BIND9 on the server and set up my forwarders to Google DNS to act as a Caching Nameserver. Then I set my routers DNS primary and secondary nameservers to the IP of the local BIND server. Everything is working great.
Now I need help configuring BIND so that the domains hosted on the web server within the network are routed to the web server and not the routers configuration page.
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Sep 20, 2010
The thing is, I've created a new local zone here (called "local.lan"), and, aparently, it is working fine, and DHCP3-SERVER is updating DNS info through the controls.But sometimes I get some strange answers from the server, like when I do the "arp" command in one of the clients, and get the server's hostname "mixed" with it's own reverse, like this: "dns.local.lan.2.168. | ether | 00:02:1e:f5:61:74 | C | eth0". Other thing is that sometimes my DNS don't update when a computer "enters" the lan. In the /var/log/syslog the DHCPOFFER appears, but the information about the DNS update isn't there.So, I would like to show you my named.conf file and my local zone db file, and get some feedback from you (what would you change... what is wrong...).
# ------------------- #
* named.conf:
# ------------------- #
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Feb 24, 2011
I have my bind9 DNS server running on Ubuntu with logging on. What's bothering me is that I have log full of localhost queries instead of from IP of the computer which actually asked.DNS queries log:/var/log/named.queries.log
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24-Feb-2011 16:01:19.413 client 127.0.0.1#38022: query: clients4.google.com IN A + (127.0.0.1)
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Jun 18, 2011
I followed blindly this how to : [URl].. out of laziness and then for some reason bind9 didn't want to start. So I tried to apt-get remove it, but when I re-install it, it failed because
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chgrp: cannot access `/etc/bind/named.conf*': No such file or directory
so I assume the chrooting stuff I did is in the way, but I know very little about chrooting and permissions ... how can I undo the following things I did :
Code:
/etc/init.d/bind9 stop
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Oct 31, 2010
Location and syntax of named.conf in Ubuntu's version of BIND 9. I already have an HTTP server (in the form of Apache) along with forum software set up on my Acer netbook. However, the only way I can access the forum software is if I type in my IP address. How do I set up my named.conf to get the IP address to redirect to a domain? I already have my resolv.conf configured to allocate a domain to the IP address, but testing the ping of the site returns a "No such domain" error.
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Mar 4, 2011
I'm trying to set up a bind9 server for my home network, I have all my IPs set to 10.0.0.X. I would like the forward and reverse to be simply "machinename", not "machinename.domain.com", as I don't want to type a domain everytime.
In my named.conf
zone "net.local" in {
type master;
file "/etc/bind/net.local.ns";
allow-update { none; };
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Sep 8, 2010
Im using bind9 as DNS server on my LAN, but it does not seem to translate its own hostname correctly for some reason. Other hosts is translated correctly, the problem only seems to apply to the DNS host itself. if i "ping <server_hostname>" from the server, it translates correctly. But if i "ping <server_hostname>" from the client it only says "unknown host" The client has the correct DNS-server assigned. How can i start troubleshooting this?
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Apr 19, 2011
Is leading whitespace significant in bind9 config files? This reverse lookup file (/var/chroot/bind9/etc/bind/zones/rev.168.168.192.in-addr.arpa) did not work; /var/log/messages had "zone 168.168.192.in-addr.arpa/IN: has no NS records".Inserting 3 spaces before IN in the NS line fixed it:
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; IP Address-to-Host DNS Pointers for the 192.168.168.0 subnet
@ IN SOA CW8vDS.localdomain. hostmaster.localdomain. (
2011041901 ; serial
8H ; refresh
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Reading the man pages and netsearching, I did not find anything about indentation requirements except for "This is usually indented for readability, but the indents are required syntactically" here.Although the above file works, named-checkconf reports an error in it:
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root@CW8vDS:/var/chroot/bind9/etc/bind/zones# named-checkconf rev.168.168.192.in-addr.arpa
rev.168.168.192.in-addr.arpa:1: syntax error near ';'
but named initialisation does not log any errors or warnings in /var/log/messages when processing this file except "/etc/bind/zones/rev.168.168.192.in-addr.arpa:2: no TTL specified; using SOA MINTTL instead".
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Feb 28, 2010
I have a Ubuntu server running in my house.Server name UshaMain PC name HomeLaptop 1 Named BooLaptop 2 Names Bobevery one is running Ubuntu 9.10The server is running Bind9 and Samba and is working from any other PC i can type ping usha and it will give me teh ip address of the server.This has been working for 4 months now.I just installed PostFix and nowthe only PC that is working with i ping the name USHA "server name " Is the server.The other three pc come back with the IP address of the domain for USHA.I have removed the Postfix from the server but the DNS is still not working for the other pc on the network.Ho do I get Bind working again form the rest of the PC.
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Jan 27, 2010
From last few days i am getting some log messages in /var/log/messages. The log is .... unexpected rcode (SERVFAIL) from master 192.168.110.8#53 I am not sure what is it.
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Mar 12, 2010
I've tried to set up an old laptop with Ubuntu server - need to use it as a web server for a group of students on a local network only. I managed to get it working fine for just one user publishing webpages etc to a folder called VAR/WWW I could FTP files into the folder and access them again via FTP or a browser. I then decided to create some subaccounts (one for each student) I did this by typnig the following commands:
Sudo usermod -g www-data student1
Sudo chown -R www-data:www-data /var/www/student1
Sudo chmod -R 775 /var/www/student1
(In this example student1 is intended to be a subfolder of www and act like a sub-domain with write authority- at least that was my intention) Problem I then get is that if I use Filezilla to access each account I cannot see where to publish the files - wherevever I place them they are not accessible from the browser. Do any of you experts out there know the answer to my problems please.
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Nov 20, 2008
who manage Postfix servers, what do you recommend is the best way to refuse all incoming and outgoing mail to specific domains? I want a blacklist of domains such as:
- AOL
- Yahoo
- MSN
- Hotmail
- Gmail
Is there a proper way I can tell Postfix to please deny sending and receiving SMTP traffic to and from those specific domains I specify? I see no need in my corp. mail server has to communicate in any way to those. I allow access to all those accounts via port 80/443 so they can just login to the web and send non business related junk this way.
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Apr 28, 2010
I am looking for a code for setting virtual alias for all domains and addresses. The scenario is that when I send an email from anywhere to my server, it will send to only one address but not send to the orginal recipient.
This is my code: I think the problem may be from the regular expression (.*) for any domains/email addresses
/etc/postfix/main.cf:
virtual_alias_domains = (.*) <-----
virtual_alias_maps = hash:/etc/postfix/virtual
/etc/postfix/virtual
(.*) admin@myserver.com <----
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Mar 18, 2010
how would i move from domain1.com to domain2.com whilst making it so people can still use the old domain if they wanted to?
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Jul 20, 2010
I am still in Linux Diapers. I setup a CENTOS SELINUX box on an internal network. So the only way I know to access it's served pages is by navigating to 10.1.1.40 from a computer within the network. The issue is that I need to create sub-domains for this server but have no Idea how to go about doing that.
Is there a way of creating an alias for the dev server so I can type something like "washington" into the web browser of a computer on the internal network instead of 10.1.1.40? Can I use a fake FQDN that on this server and get served its web pages or do I need to register a FQDN?
Background: I am creating a series of websites using Drupal and am trying to implement the multisites functionality (all the sites are run from a single code base). To do this they suggest setting up each site on a sub-domain during development. We have not yet purchase the FQDN's for the sites so I have no FQDN to setup.
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May 29, 2011
I am trying to setup ipv6 lan network.using Ubuntu 10.04 as DNS server.Able to resolve domain names from dns server itself but can't resolve from client machine (backtrack5). I have tried to flush iptables but still no effect; dig gives servfail error.I can ping both machines from one another.
named.conf.options reads
Code:
options {
directory "/var/cache/bind";
forwarders {202.141.81.2; };
allow-query {any; };
allow-recursion {any; };
code....
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Feb 27, 2011
I'll post an scenario and hopefully you can help me understand the concept and put me in the right track and do what I intend, if possible. Let's say I have a dedicated server with 2 static IPs each with an associated domain, let's call them www.site1.com and www.site2.com. Now, apache is running on it, I'd like to redirect anyone coming from site1.com to /home/site1/public_html and anyone coming from site2.com to /home/site2/public_html.In short, apache serving 2 entire roots depending on the accessed IP/domain. Whether the sites root are in the same parent folder, such as /home/site/site1_public_html and /home/site/site2_public_html or like above doesn't really matter, as long as it works.Additionally, do something similar with Postfix, so that I can have it running imap/smtp for foobar@site1.com and foobar@site2.com on the same server.At this moment, both apache and postfix are working, and we host only www.site1.com with the respective foobar@site1.com. But I'm not sure how to proceed or even if it's possible to achieve the above solution.
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Jan 13, 2011
Is it possible to add/join my Linux Suse 11.3 server with 2 domains ? I know I can do that with Windows PC, but I never try that with my Linux box. FYI, my Linux server is already joined with a domain, now I want to join my box with another domain and I don't want to take it off the current joined domain.
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Jan 30, 2010
I have a postfix mail server up and running. I've added more than one domains to recive mail by adding them to the :/etc/postfix/virtual and poiting to a UNIX user account. That works fine. But when users send out mails (From squirrelmail) all users send from the same domain. How do I add a $myorgin to a virtual domain?
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Jun 7, 2010
I am setting up a Postfix MTA that will be only sending mail for 10 different domains. We have other servers that will be receiving the mail for the domains so I only need to set up for sending on Postfix.
What my issue is I am trying to configure Postfix so that when it sends mail the header shows what domain the mail came from and not the domain the Postfix server is set to. For example....
[URL]
When I send mail from domain2.com I want it to show in the header it was sent from domain2.com and not from domain1.com. What do I need to set in postfix so that this happens? Right now no matter what domain the mail is from the header always shows the server domain and I can't have that.
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Jun 18, 2009
I am running a spam filter on debian lenny 5.1 with postfix, amavis-new, spamassassin, and clamav. It works pretty well but I would like to finish tweaking it to minimize the mail getting quarantined. It really isn't quarantining anything that isn't spam, except for an occasional list mailer. However, the quarantine is huge, and takes a while to go through. I noticed that much of the spam is coming from foreign country tld's like .cz is there anyway to have postfix run a check on the header and if the email, or smtp origination is from a server from a foreign tld have it just rejected. I can whitelist anything if need be in the future but as of now we don't do any business overseas and don't need to worry about blocking legit email.
I think this should be possible, however, I am unsure of the syntax for the file, where to put it and if wildcards are possible in domain blocking like
Code:
*.cz REJECT
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