Network adaptor DNS name reverting to old

Hi guys,
We setup a OSX SL machine to test its email performance. When it was setup, the admin gave it a host name like company-mailserver.com, but we modified this and related server identity names to reflect the new email domain it would be handling, mail.diffcompany.com; and since then its running mail services and server configuration get screwed up constantly.
When it was working last week, changeip -checkhostname showed proper hostname and DNS hostname matching for mail.diffcompany.com, and the DNS name as listed in the server administrators panel (under network) showed mail.diffcompany.com for the en0 ethernet adaptor. But when I came in to work today, the machine's thinking wheel was spinning in the server admin panel, and numerous other fields that were filled in correctly and working for mail, dns, etc reverted to default blank.
I saw this before and immediately checked the ethernet adaptor DNS name, and sure enough it had reverted to company-mailserver.com. Why does this keep happening? I have noticed that other services that were originally setup were using the company-mailserver.com name, so clearly there's some sort of legacy/cache going on of the first DNS entries that I cannot seem to undo. Nonetheless I disabled all those other services so I would assume they shouldn't have any effect.
Other posts I've read suggest that once DNS records get screwey, often you're better off reinstalling the whole shebang. I'd like to avoid that at all costs, as this would not be viable in the the future, and I'd like to know what exactly is going on anyway.
Anyone have this experience? What steps did you take to fix it?

I'll assume the box is not using DHCP for its IP addressing. If the box is using DHCP for its network controllers, switch over to a static address and static-defined DNS references.
Given the fundamental nature of DNS in a modern IP network, if you're going to, um, misrepresent the configuration to the server and to DNS, then, um, Bad Things can happen if you don't correctly and entirely, um, misrepresent DNS and the configuration.
if you want to do this such that it'll be stable, then set up your own local DNS services on the box and aim the box at its own DNS and aim the DNS server at your forwarding servers, and effectively create your own little private bubble of example.net within your enveloping example.com network configuration.
[Here's a local DNS set-up|http://labs.hoffmanlabs.com/node/1436] that would likely work here. You'll have a zone for your example.net target domain for this server (its own "bubble"), and set up your forwarding or such to aim at your (other) local DNS servers, and those can then reach out to the rest of the Internet.

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Computer Name Reverting to Old Name

I have a Mac Mini running Server and use it for Profile Manager, File Sharing, Time Machine, VPN, DNS, and Open Directory.
There are about 20 machines setup on this domain and I ran into an issue with a MacBook I wiped and am trying to use for a different user. I wiped the HDD and reloaded Mavericks. I can join the domain and enroll the machine for the new user just fine.
However, once enrolled, the name of the computer is changed (and grayed out) back to the name that was used for the last user.
Because I wiped it and I can change it when it's not on the domain, I know it's coming from the network / serer. But I can't figure out how to fix it.
If I take it off of the domain and delete the profiles that were loaded, I can change it back and it will stick.
If I force a change on the machine itself, logging out and back in reverts it to the old computer name.
Any ideas on how to fix this?

It seems that the server is binding to the MAC address and thus changes the name of the computer once connected to the network. So, you could change the MAC address; however, you need to be a super user to do that. Bear in mind the computer has two MAC addresses, one for the Ethernet and the other airport. Also, you would need to do it in Terminal...sudo ifconfig en0 ether 00:01:02:03:04:05 --example.

Cluster network name resource 'Cluster Name' failed registration of one or more associated DNS name(s) for the following reason: The handle is invalid.

I'm stuck here trying to figure this error out.
2003 domain, 2012 hyper v core 3 nodes. (I have two of these hyper V groups, hvclust2012 is the problem group, hvclust2008 is okay)
In Failover Cluster Manager I see these errors, "Cluster network name resource 'Cluster Name' failed registration of one or more associated DNS name(s) for the following reason: The handle is invalid."
I restarted the host node that was listed in having the error then another node starts showing the errors.
I tried to follow this site: http://blog.subvertallmedia.com/2012/12/06/repairing-a-failover-cluster-in-windows-server-2012-live-migration-fails-dns-cluster-name-errors/
Then this error shows up when doing the repair: there was an error repairing the active directory object for 'Cluster Name'
I looked at our domain controller and noticed I don't have access to local users and groups. I can access our other hvclust2008 (both clusters are same version 2012).
<image here>
I came upon this thread: http://social.technet.microsoft.com/Forums/en-US/85fc2ad5-b0c0-41f0-900e-df1db8625445/windows-2012-cluster-resource-name-fails-dns-registration-evt-1196?forum=winserverClustering
Now, I'm stuck on adding a managed service account (mas). I'm not sure if I'm way off track to fix this. Any advice? Thanks in advance!
<image here>

Thanks Elton,
I restarted 3 hosts after applying the hotfix. Then I did the steps below and got stuck on step 5. That is when I get the error (image above). There
was an error repairing the active directory object for 'Cluster Name'. For more data, see 'Information Details'.
To reset the password on the affected name resource, perform the following steps:
From Failover Cluster Manager, locate the name resource.
Right-click on the resource, and click Properties.
On the Policies tab, select If resource fails, do not restart, and then click OK.
Right-click on the resource, click More Actions, and then click Simulate Failure.
When the name resource shows "Failed," right-click on the resource, click More Actions, and then click Repair.
After the name resource is online, right-click on the resource, and then click Properties.
On the Policies tab, select If resource fails, attempt restart on current node, and then click OK.
Thanks

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When I try to sync with iTunes it says when Kellie-PC is available it will sync but thats the name of my old network/router. I would like to know how to sync with the new network/router name.

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Communicate with cRIO when IP Address and DNS Name changes over Network Variables

I am developing a LabVIEW software for an European Project using cRIO-9074 and RT Application Reployment to update all cRIO devices with the last version.
To communicate with the cRIO devices I have also developed some applications that are outside cRIO on LabVIEW Project that uses Network Variables to Read/Write to the devices.
When I am developing the software, everything works just fine because the LabVIEW Project knows the IP Address on my cRIO device. However, when I use RTAD to install the software and then my applications outside the LabVIEW Project, the aplications are, not always able to find the device when the IP address changes.
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Best regards,

Quintino,
You can programatically open connecitons to Shared Variables. This allows you to decide at runtime the IP address, lib name and SV name you wish to connect to. I've attached a vi snippet the demonstrats an Action Engine to handle the connection to a SV named "Parameters".
I normally store the cRIO_Settings in a .INI file that is easy to modify.
Attachments:
SV Example.png ‏45 KB

Number of network adaptors needed in RAC

hello guys,
in oracle RAC each node must have a minimum of 3 adaptors. one for private interconnect, one for public interconnect and one for serving the user requests (VIP).
1. also in oracle 11g with the introduction of SCAN. do we have to add a new network adaptor to make use of scan or can the network adaptor using the VIP address can be used for SCAN. if SCAN requires a new adaptor then it makes 4 n/w adaptors needed for each node,
2. Oracle documentation says that SCAN can be resolved to at most 3 network addresses. what happens if we have a RAC with more than 3 nodes.
3. How does this SCAN really work. it says that scan be used as a single IP address instead of defining several ip address in the tnsnames.ora file at the client side.
4. moreover the these SCAN ip Addresses are assigned by the DNS. i dont understand how can more than 2 system share a same ip address.
can any one help me understand these concepts please...

vishnusivathej wrote:
hello guys,
in oracle RAC each node must have a minimum of 3 adaptors. one for private interconnect, one for public interconnect and one for serving the user requests (VIP).I believe its not correct. There should be two adaptors only. One for the private interconnect, one for the pulbic. The VIP is going to be using the public interconnect only. The third one, is going to be required if you are going to be using it for storage.
>
1. also in oracle 11g with the introduction of SCAN. do we have to add a new network adaptor to make use of scan or can the network adaptor using the VIP address can be used for SCAN. if SCAN requires a new adaptor then it makes 4 n/w adaptors needed for each node,SCAN IP would be separate from the VIP. I am not sure that you need a separate adaptor for it since its also going to be a public IP.
2. Oracle documentation says that SCAN can be resolved to at most 3 network addresses. what happens if we have a RAC with more than 3 nodes.There is no mandatory thing that you need 3 SCAN network addresses. One can be used as well. 3 is the suggested setting for the setup. I believe for nodes more than 3 too, this would work. I have not installed 11.2 RAC for more than 3 nodes yet so can't be sure .
3. How does this SCAN really work. it says that scan be used as a single IP address instead of defining several ip address in the tnsnames.ora file at the client side.That's wrong. There is nothing like single IP address.SCAN is Single Cluster Access Name which means instead of putting VIPs in the client side tnsnames.ora, you are going to put just a SCAN cluster name whose VIP address resolutio is going to be done with the help of your DNS . Please read the documentation which explains the concept in lot more detail.
4. moreover the these SCAN ip Addresses are assigned by the DNS. i dont understand how can more than 2 system share a same ip address.Not sure that I got your statement.
HTH
Aman....

Which network adaptor in Pavillion ZE5500 CTO?

Hi,
I was going to install Windows 7 on the kids laptop, and with the support for hardware in Windows 7 I didn't even bother to check which network adaptor was in it. That decision came back to bite me
Could someone help me out with the name/model of this network adaptor, and if possible which Windows 7 driver works with it?
Cheers!

Lappy I think he means the wired LAN...it is National Semiconductor MacPhyter. Here is a link to the XP driver which might not work in Windows 7:
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=32...
Not sure a Vista driver was ever written for this old device....try the national Semiconductor website. The MacPhyter was common on computers with an ALi chipset, as the ze4xxx and ze5xxx had.

How to change DNS name ?

I have an iMac and Macbook Pro, both of which I set up to triple-boot Leopard, XP and Ubuntu. I've noticed that after booting into one of the other OSes, the DNS Name of that machine shown in Remote Desktop will remain whatever it was called in Ubuntu/XP even after rebooting into OS X.
On the iMac this seems to revert to normal after some time/number of reboots but the MBP insists on appearing as ubuntu.config in ARD and as ubuntu in my command line prompt in Terminal. This is especially annoying as I have since wiped the two extra partitions and returned to a single volume of OS X.
I know it's hardly a big deal but I've tried everything I can think of and I'd appreciate some advice.
Thanks

Well I have the correct hostname in Terminal now.
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I've had a poke round in every plist I can find that seems relevant but I'm all out of ideas.

How can i change the DNS Name of a 10.6 Server

Hello when i installed the Server i made a mistake and put in a wrong dns name wich is not reachable from the clients. How can i Chane the DNS Name?

The core command is changeip, and Google will find some details and discussions.
$ man changeip
$ changeip {-v} {-d path} directory-node old-ip new-ip {old-hostname new-hostname}
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DNS Name not Sharing Name

Howdy all,
I've been noticing and have been dealing with until now that the entry in the DNS Name column doesn't always report accurate.
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ARD reports in it's Name field the same from the Sharing Prefs' as above.
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• correct name
• Unknown
• blank (as in white space and not the word blank)
• another machine's name (oddly enough, a Windows machine)
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Thanks in advance.
-p

I believe this is due to the TTL (Time To Live) for DNS entries. We just moved over to VLans here and all the machines are grabbing new DHCP IP numbers. Because of this as new computers are moved over they are grabbing numbers of other systems that have been turned off for a while. The old DNS name still exists on that IP. Use Network Utility to see what DNS names are associated with that IP. I bet that more than one name is on that IP number.

Add LPD printer using DNS name

I am trying to add a networked printer in the Print Center using LPD and the DNS name. Whenever, I type the full dns name, I get an message that says "invalid or incomplete address". I know the dns name is correct and can add it no problem to systems running OS X 10.6 and 10.7. I can also add it in 10.8 using the IP address.
Has something changed in Mountain Lion or is this a bug?

I was just on the phone with Apple support as well. The "senior advisor" I talked to said he was familiar with "some other instances" of this happening. He opened a case and told me he would get back with me as well. He did say there is no known resolution.
The initial person I sopke with told me they only support direct connection of printers, not networked printing. The senior advisor tolde me that this is an issue with non-Mountain Lion compatible drivers… We are running primarily HP and Xerox workgroup-class devices that are a few months old up to 5 or 6 years old. They all print fine in ML if we get them set up (using an IP address). We are a publisher and would notice very quickly if print drivers didn't work correctly.
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Kevin

SCCM remote control keeps dropping out when another network adaptor loses connection

Hey guys,
Hopefully someone will be able to help me out
at work, we are running SCCM 2012, and I use SCCM 2012 config manager to manage the clients etc
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a laptop with a wired, and wireless connection:
I remote control the machine through the wired network address (lets say 192.168.0.1), but if the wireless connection drops out (someone turns it off or it breaks) the remote control client will kick me off, lock the screen, and I have to wait 20-30 seconds
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This happens with any network adaptor that's installed on the client
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This is going to be done by design for security reasons. If the network connect for whatever reason is down the pc will automatically be locked.
Garth Jones | My blogs: Enhansoft and
Old Blog site | Twitter:
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Windows 7 or Windows Server 2008 R2 domain join displays error "Changing the Primary Domain DNS name of this computer to "" failed...."

Hi,
Windows 7 or Windows Server 2008 R2 domain join displays error "Changing the Primary Domain DNS name of this computer to "" failed...."
DC:windows Server 2008 R2
Domain functional level:Windows Server 2003
When Winxp join domain, have no this error message.
I checked http://support.microsoft.com/kb/2018583?wa=wsignin1.0 does't work.
There have 3 suggestion in this article:
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Doesnt's work.
2.Connectivity over UDP port 137 is blocked between client and the helper DC servicing the join operation in the target domain.
On my DC, I run netstat -an, reslut as below:
UDP 192.168.20.3:137 *:*
3.The TCP/IPv4 protocol has been disabled so that the client being joined or the DC in the destination domain targeted by the LDAP BIND is running TCP/IPv6 only.
We are not using IPV6.
This server recently updated from Windows Server 2003 to Windows Server 2008 R2. Before upgrade, when Win7 and Win2008 join this domain, also have the same error message.
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BR
Guo YingHui

Hi Guo Ying,
I have faced this critical error which makes over-writes the host names in the domain when you join.
For example: Already you had a host name called as PC.domain.com in the domain.com Domain.
When you try to add the another host name called as PC in the domain.com Domain, it doesn't give you the duplicate name error on the network it does over-write the existing host name called as PC.domain.com & it will add the new host name into the domain.
Host name which got over-written will get removed from the domain. I faced this issue in my project. My DPM host name got removed from the Domain & new host name got joined into the domain which halted my backups for one day.
Final Resolution is as follows:
You need to start the dns console on the DC & drop down the domain name.
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You need to add the Domain Naming Master under the _msdcs or add all the domain controllers which you had.
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Regards
Anand S
Thanks & Regards Anand Sunka MCSA+CCNA+MCTS

DNS Name in OD Password Server field?

So, I got a new juniper firewall the other day to reduce the amount of work my main server has. Fire it up, configure it, and I notice that password server requests are going out the NAT, then back into the public IP of the server.
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Hi,
johan wrote:
> Is it possible to put a DNS name in an Exception filter ?
No.
> And can i open a filter for a range of destination addresses like 10.0.6.*
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CU,
Massimo Rosen
Novell Product Support Forum Sysop
No emails please!
http://www.cfc-it.de

Domain name/"primary DNS" name/mail host name/mail server name/mx name

Hi,
I have registered my domain name (N.com) with an external dns server and created an MX record (mail.N.com) for it as well. My server sits behind a router and internet traffic is port(80)-forwarded to my server's fixed internal ip address (I can access my webpages from the internet just fine). When I initially setup the server I was asked to give it a "primary DNS name." I naturally assumed that N.com was supposed to be entered here, but that just caused all kinds of problems (though I still do not understand why). So I reinstalled and currently have server.N.com as the primary DNS name of the server (although it shows up in Server Admin and Workgroup Manager as server.local--why is that?)
I have had no luck getting any email from the internet with the default settings in mail services (domain name of N.com and host name of server.N.com). Having no luck with the defaults, I assumed that maybe I needed to change the host name to "mail.N.com" so that it matched the MX record. I also changed the user preferences in Workgroup Manager to receive mail from mail.N.com--but still no luck. Could someone tell me what I am doing wrong and how come none of the Mail Service literature mentions anything about what a mail "host name" is supposed to be? Is it supposed to be the same as the "Mail Server" name that Workgroup Manager asks each user for? and is it the same as the MX record name?
I am just needing some help to connect all these variously named, but undefined, dots.
Also, how come I can access webmail from the internet using www.N.com/webmail but can't do it from any computers within my physical network (I have to use IPaddress/webmail or server.local/webmail)?
Also, should my user email addresses be [email protected] or [email protected] (which is the current default)?
Thanks in advance and good luck!
John

I had been told by a friend that ... regular email coming in from the internet would go through port 80
Unfortunately you were misinformed.
My MX record needs the extra subname (such as "mail") in front of the domain name, right?
Not at all. A MX record for 'N.com' is entirely valid (expected, in fact).
An MX record tells remote mail servers where to send mail for any domain/subdomain. If you think about it, let's say you worked for Apple and you wanted people to be able to send email to [email protected], well then you need an MX record for 'apple.com'.
You can see if you dig MX apple.com that they actually have 9 MX records, but the point still stands.
Now, you might also have MX records for subdomains so that you can have [email protected], [email protected], [email protected], etc. Each of these subdomains would need a separate MX record.
So, in general, for any set of email addresses @[anything.]domain.com you have a MX record telling remote mail servers where to send that mail.
Of course the MX record name is mail.N.com, but I think you are implying that the in the Mail settings of Server Admin where it asks for domain name all I need to put there is the N.com, right?
What I mean is that you need to set the domain name to whatever domain name you expect to receive mail at.
If you want users to have email addresses in the form of [email protected], then you enter 'N.com'.
If you want users to have email addresses in the form of [email protected] then you enter 'mail.N.com'.
If you want both forms, enter one in the main domain and add the other(s) in the Advanced -> Hosting -> Local Host Aliases section.
Is there anything in the Mail settings that needs to have the full MX record name (mail.N.com)?
Yes. Either the 'domain name' or the 'Local Host Aliases' needs to contain the same thing as your MX record. That's because the MX record tells remote servers to send mail to this machine, but the machine won't accept the mail unless it is configured to do so.
What is the "host name" supposed to be?
This should be the name that remote servers see when this machine tries to send outgoing mail.
Ideally this should match the reverse DNS of your IP address, that way when it connects to a remote server it says "Hi, I'm $hostname" and the remote server can lookup the machine's IP address and see the same result. This will reduce the problem of remote servers thinking you're sending them spam.
If you only have a single IP address then this probably needs to be something like 'N.com'. If you don't have control over your reverse DNS then you're going to run into a problem.
Also in the user accounts (in Workgroup Manager) what should the "mail server name" be? Is it the host name or the domain name?
Off hand, I don't know.
Also, why are all the default user email addresses [email protected] (the name I gave the server at setup)? Why doesn't the user accounts create [email protected] as the default address?
Presumably because the mail server says it is 'server.N.com' and therefore any accounts on that machine would be [email protected]. Changing the domain name (as above) should fix that.

Network adaptor DNS name reverting to old

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