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• Email bouces to tell me it was delivered?

  - by flamey

  I get this back after sending an email. It says "Your message was successfully delivered", then why do I even get this? Or this phrase referes to something else? Reporting-MTA: dns; gmmr6.centrum.cz X-Postfix-Queue-ID: CDBBB8016CE1 X-Postfix-Sender: rfc822; [SENDER_EMAIL] Arrival-Date: Sat, 5 Mar 2011 22:04:41 +0100 (CET) Final-Recipient: rfc822; [RECIPIENT_EMAIL] Original-Recipient: rfc822;[RECIPIENT_EMAIL] Action: delivered Status: 2.0.0 Diagnostic-Code: X-Postfix; delivery via maildaemon: OK This is the mail system at host gmmr6.centrum.cz. Your message was successfully delivered to the destination(s) listed below. If the message was delivered to mailbox you will receive no further notifications. Otherwise you may still receive notifications of mail delivery errors from other systems. The mail system <[RECIPIENT_EMAIL]>;: delivery via maildaemon: OK

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• Trouble joining Windows Server 2008 to Domain

  - by Jim R

  When I try to join my new server to my existing domain I get the following error: "An attempt to resolve the DNS name of a DC in the domain being joined has failed. Please verify this client is configured to reach a DNS server that can resove DNS names in the target domain." I have tried all of the following already: Successfully pinged the domain controller. Ping the new server from the domain controller by IP address and by DNS name. Ping the DC server from the new server by IP address and by DNS name. Changed the network to DHCP (it was originally static). No joy as static or DHCP. Turned off all firewall settings. Added the domain name to 'hosts' file. Added the server name of the primary domain controller to the 'hosts' file in the new server. Any ideas? Thanks in advance for any help! Jim Update: With help from J. Brian Kelly (Thanks) I have managed to narrow down the problem to a DNS issue. Specifically, UDP/53 packets are being sent (they are seen in Network Monitor), but are not getting to the DNS server. But, I do not yet know why. Update: The quested output from IPCONFIG for the HyperV host and the virtual machine. IPCONFIG from HyperV Server Windows IP Configuration Host Name . . . . . . . . . . . . : HYPER Primary Dns Suffix . . . . . . . : sfi-wfc.com Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : sfi-wfc.com Ethernet adapter Local Area Connection 4: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Primary Network Physical Address. . . . . . . . . : 00-30-48-CA-CC-7A DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::cd16:3ac2:3d4f:e275%679(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.100.1(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.100.10 DHCPv6 IAID . . . . . . . . . . . : -1476382648 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-12-10-20-E9-00-30-48-CA-CC-7A DNS Servers . . . . . . . . . . . : 192.168.100.5 NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter Local Area Connection 3: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : sfi Description . . . . . . . . . . . : Intel(R) 82576 Gigabit Dual Port Network Connection #2 Physical Address. . . . . . . . . : 00-30-48-CA-CC-7B DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPCONFIG from Virtual Machine Windows IP Configuration Host Name . . . . . . . . . . . . : DB Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : sfi Ethernet adapter Local Area Connection 2: Connection-specific DNS Suffix . : sfi Description . . . . . . . . . . . : Microsoft Virtual Machine Bus Network Adapter Physical Address. . . . . . . . . : 00-15-5D-66-03-02 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.100.128(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Saturday, August 29, 2009 10:44:45 AM Lease Expires . . . . . . . . . . : Tuesday, September 01, 2009 3:08:33 PM Default Gateway . . . . . . . . . : 192.168.100.10 DHCP Server . . . . . . . . . . . : 192.168.100.5 DNS Servers . . . . . . . . . . . : 192.168.102.5 Primary WINS Server . . . . . . . : 192.168.100.5 NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter Local Area Connection* 8: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : sfi Description . . . . . . . . . . . : isatap.sfi Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 9: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . : 02-00-54-55-4E-01 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes

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• Unable to configure DD-WRT SNMP monitoring with Zabbix

  - by Jien Wai

  Installed Zabbix on Ubuntu but not sure what setting I missed. Base on my concept, I would like to using SNMP to monitoring DD-WRT router which it using SNMP service. I did enable to SNMP service at DD-WRT router page. And also created a host at Zabbix with included DD-WRT template. After I done it I still unable to get any connection/information at Zabbix which mean the router doesn't communicate with Zabbix. The above picture is my DD-WRT's SNMP configuration. http://img13.imageshack.us/img13/2228/rhj2.png Also this is the Zabbix configuration which I have created the service to monitoring my DD-WRT router. http://imageshack.us/a/img853/7311/hlpr.png

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• Telnet works from desktop but not Server

  - by Joe Estes

  Sending mail via smtp.gmail.com is failing on my server. I looked on some forums and people were saying to make sure you can telnet to the smtp address first. When I telnet from my server i input this and get this error: [root@localhost ~]# telnet smtp.gmail.com 465 telnet: smtp.gmail.com: Temporary failure in name resolution smtp.gmail.com: Host name lookup failure From my OS X desktop I do the same and get this: Macintosh-3:~ joe$ telnet smtp.gmail.com 465 Trying 74.125.127.109... Connected to gmail-smtp-msa.l.google.com. I'm running a fedora core 9 server with a firestarter firewall. I have turned off the firewall and the same error persists. I'm also using port forwarding from my router to this server. I have allowed forwarding for port 465 on my router as well. Can someone please help. Thanks, Joe

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• Routing for IPSec tunnel

  - by Emre A

  Hello. For Juniper NetScreen-NS25, I configured a site-to-site IPSec tunnnel. For the outside interface of remote site, I also needed to go through tunnel which has the same IP as IPSec gateway. Now, when I add static route to route that outside interface IP through tunnel while tunnel is up, there would be no problem at all but if the tunnel is down for some reason, it cannot be re-established as the routing for the IPSec gateway IP which is the same as outside interface IP is set to go through tunnel which it needed to re-etablish at that time. So, packets won't hit that IP. I tried adding another routing entry which has metric 2 through other gateway but it did'nt succeeded. So, what type of routing should I configure to reach that IP when tunnel is down. Thanks in advance.

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• iptables rules for botnet (UDP flood) protection

  - by Petar Simeonov

  I'm currently experiencing a massive UDP attack on my server. I host a couple of gameservers, mainly Tf2, CS:GO, CS 1.6 and CS:Source, and my 1.6 server is being flooded. I tried different rules in iptables, but none of them seemed to work. I'm on a 100mbps bandwidth tariff, but the flood i receive is 500+mbps. This is the log of the latest tcpdump - http://pastebin.com/HSgFVeBs Packet length varies throughout the day. Only my gameserver ports are being flooded - 27015, 27016, 27018 via UDP packets. Are there any iptables rules, that might prevent this?

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• What services does hosts.allow NOT affect?

  - by Jed Daniels

  I know that hosts.allow and host.deny only affect things that are tcpwrappered, but what does this mean in practice? It seems that most people use hosts.allow to handle ssh and nfs blocking, but what other services are typically handled there? And what services AREN'T typically handled there? Edit: ok, I realize I did a terrible job of explaining what I was after. No, I'm not interested in knowing if a particular service can be handled by hosts.allow, I want to know if a service will be handled. For example, if I do an lsof -i, I get a nice list of things that are listening for connections to my box. I want to know which ones will be affected if I go stick an entry into hosts.allow (well, I really want to know which ones won't be affected).

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• Recycle Bin for Windows Server 2003 File Shares

  - by Joseph Sturtevant

  One of the networks I administrate uses Windows Server 2003 File Shares to provide network storage for users. To prevent against accidental deletion, I use Shadow Copies to create snapshots twice a day. This method is only effective, however, for files which were on the share during the last snapshot. When users accidentally deleted files recently placed on the share, I have no recourse except to remote desktop into the server and attempt retrieval with an undelete utility (this is only effective if the file has not been overwritten). Is there a feature like the Windows Recycle Bin for Windows Server 2003 File Shares? What is the best way to protect my users against accidental file deletion in this scenario?

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• Chat client/server that offers certain options.

  - by MrStatic

  A few friends of mine and including me for the past few years have hosted an irc server on one of our dedicated servers. We use it for just personal reasons. We like the aspect of it that it allows private messages and chat rooms. Plus the ability to send/receive files and is cross platform (Linux/Mac/Windows/Mobile). Our domain is about to expire and we are looking to move onto something new. So we are looking for a chat client / server that offers the following: Chatroom (multiple people chatting together in the same box) File transfers Private messages Cross Platform (especially mobile ie: Blackberry and Android) We don't have to host it but that isn't out of the question Logging on the client side (we say a lot of crap and like to go back and quote said crap) SSL/TLS Some sort of encryption some of the stuff said/sent is of a sensitive nature ie: business nature

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• Can't telnet to SQL Server

  - by Thiago

  Hi there, I have an SQL Server running on a computer, and I'm trying to access it from another computer in the same local network (potentially VPN, since it's located in a datacenter). The point is that I can't even telnet to the port in which SQL Server is listening. And yes, SQL Server is working, since I can telnet to it from my workstation. I think it's something in the host, since there's no hop between the two computers, but I don't know how to troubleshoot this. Basically I get a connection failed, when I try to telnet. What can cause such problem, since apparently there's no firewall and the server is accepting connections from other computers? Thanks in advance

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• Ho do you view all your monitoring software

  - by BLAKE

  In my office I have all our monitoring tools setup and working great, but I dont have an easy way to view them. I have a large TV in my office plugged into an old PC that has my nagios status page always showing. If I need to change anything on that computer I use Synergy to access the computer from my desktop. We are thinking about adding another TV and I want some suggestions on setting it all up. We are a 99.99% Windows shop. What do you use to run all the TV's in your helpdesk? Synergy works for me, but what if one of the other admins want to change the screen? Is there any easy way that any of us (currently 4 people) can change the screen from our desktops? (Remote desktop doesn't work because it locks the console which is the output to the TVs.) Any advice would help, Thanks.

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• VirtualBox in production?

  - by MrG

  I'm planning to move a service which is currently powered by Debian into a VirtualBox. That would allow us to easily port it i.e. to a faster machine if required. The setup would be: debian host > Virtual Box #1 > debian instance #1 running Apache & application > Virtual Box #2 > debian instance #2 containing database Do you have any experience with a production setup based on Virtual Box? Is it stable and fast enough? Many thanks!

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• Changing aspect ratio of Virtualbox VM under OSX

  - by Sambo

  I have a Windows guest on an OSX host, running at 1024x768. I want to use scale-mode to make the window small enough to have on the side of my screen, but the problem is that since I maximised the VM in scale mode earlier, the aspect ratio is now nearer my 16:10. I've tried resizing in only one dimension, disabling and re-enabling scale mode and also reinstalling guest additions. A search of the Virtualbox docs does tell me that maintaining aspect ratio is doable under OSX, but it doesn't say how. I'd really like to be able to fix this without reinstalling my VM if possible. I'm running Virtualbox 4.2.16 r86992 under OSX 10.8.4 with a Window 7 guest.

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• Strange failure audit in 2003 R2 X64 SP2

  - by Az

  our server is running 2003 R2 X64 SP2, we keep seeing this in clusters of around 4 rapid fire. Sometimes 2 hours, sometimes around 8 hours apart with slight variations. I am also seeing the same blank username and domain in an account locked out message, I have tried disabling all scheduled tasks, if anyone has any idea please let me know! I find these processes running out of svc host: AeLookupSvc, AppMgmt, BITS, Browser, CryptSvc, dmserver, EventSystem, helpsvc, IAS, lanmanserver, lanmanworkstation, Netman, Nla, RasMan, Schedule, seclogon, SENS, SharedAccess, ShellHWDetection, winmgmt, wuauserv, WZCSVC Logon Failure: Reason: Account currently disabled User Name: Domain: Logon Type: 3 Logon Process: Authz Authentication Package: Kerberos Workstation Name: PPCLUBES_TS Caller User Name: PPCLUBES_TS$ Caller Domain: PPCLUBES Caller Logon ID: (0x0,0x3E7) Caller Process ID: 928 Transited Services: - Source Network Address: - Source Port: -

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• My profile won't load!

  - by blsub6

  I can get into my Windows Server 2008 R2 primary domain controller via remote desktop just fine. It's my boss who's got his profile messed up. When he tries to log in, he gets the message The User Profile service failed the logon. User profile cannot be loaded. I've looked for his profile everywhere and cannot find it to delete or fix it. System Properties Advanced User Profiles shows my profile, the Administrator profile and the Default Profile. HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList only shows my profile and the Administrator profile. Everything that I've found on the internets points me to those locations. Help a brotha out?

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• server shrinks html file to 0bytes on upload

  - by user38714

  Hi there, I have come across a very unusual problem. I am working on a website at the moment and whenever I upload a file to the server, it becomes a 0kb file. I have changed ftp software to filezilla to see would this help and it hasn't. I have compared it to other sites I am working on the permissions are the same numbers 0644 but on the site that I am having the trouble with the permissions have the prefix- flcdmpe(0644). Would this be the problem and if so any ideas how to change it?, changing the permissions doesn't work. I have been onto the host company and they cannot figure it out at all. Any help would be appreciated. Cheers Emma

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• Single sign-on for SharePoint to MySite?

  - by Chris W

  I've got a fairly simple SharePoint 2010 farm set up: 2 WFE servers with Network Load Balancing hosting the main portal site. As per Microsoft's best practice recommendations I've set up My Sites in a separate web application. As some of the user base are not using domain joined PCs they have to login once for the portal (http://portal) and then again when the access My Sites since they're crossing in to a separate web application on a separate host (http://mysite). Portal & MySite are both hosted on the same physical WFE servers. Is there an easy way to set up some thing to stop this happening and just have them login once? I understand that there's plans for us to deploy ISA in the not too distant future - could we use ISA to manage authentication to the two sites so that the users only need to log in once?

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• VERR_NOT_SUPPORTED when trying to create a windows 8 image in Virtualbox

  - by Bart Burg

  I'm trying to create a Virtualbox image of windows 8 consumer preview. I tried this tutorial: http://www.addictivetips.com/windows-tips/how-to-install-windows-8-on-virtualbox/ I did exactly what was said in that tutorial. At the step "Now navigate to the Windows 8 developer build ISO file that you downloaded and select it." I get the error "Could not get the storage format. (VERR_NOT_SUPPORTED)". I also get this if I use the regular wizard. Host OS: windows 7 Virtualbox version: 4.1.16 Both windows 8 64 bit and 32 bit tested.

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• Is it easy to update ubuntu beta to ubuntu final release?

  - by Peter Smit

  At this moment I am preparing a virtual server to host a web application which needs php5.3 The virtual server base image is always Hardy (8.04 LTS). There is no php5.3 until the upcoming release in a few days: Lucid (9.04 LTS). I am seeing to options: - waiting until the final version is released and then start preparing this server - Now upgrading to the beta (do-release-upgrade --devel-release) and when the final release has come upgrading to that For time constraints I would prefer the second option. I only can't find whether it will be easy to upgrade from a beta to the 'clean' final release. Is this possible in an easy way. Will it have any drawback for security or will there be any traces left of it being ever a beta release? Note: the server will not go into production before the LTS is really installed.

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• apache2 default namevirtualhost

  - by Zulakis

  I got a site server.com which I want to be returned when it is directly adressed using server.com or www.server.com but issue a 404 if the webserver gets accessed using its ip or another hostname. I got something like the following: NameVirtualhost 10.0.0.1:80 <VirtualHost 10.0.0.1:80> #This should be used if Host is server.com or www.server.com ServerName server.com ServerAlias server.com www.server.com DocumentRoot /var/www/ </VirtualHost> <VirtualHost 10.0.0.1:80> #This should be used alternatively RewriteEngine On RewriteRule (.*) - [R=404] </VirtualHost> How can I now set that the second entry should be used if hostname is not server.com or www.server.com?

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• Remove all HTTP bindings from an IIS 6 site while leaving SSL bindings

  - by MikeBaz

  We have a (remote, via a reseller) customer who configured their IIS6 server to not have any port 80 HTTP bindings, only port 443 SSL bindings. We would like to reproduce this without going through the three layers (!) to get to the customer to test some error scenerios. However, whenever I try to get IIS to not listen on IIS at all, I can't do it. If I do it in the UI, either leaving in the main properties page, or in the advanced bindings page, the UI does not let me proceed. If I remove the HTTP ServerBindings from the metabase.xml directly, IIS makes it port 80, all unassigned addresses anyway. Is there a way to get to the "SSL only" state naturally? Please note I am NOT talking about the "require SSL" checkbox or underlying metabase setting, as that still listens on port 80 (or whatever) to give the "SSL required" error message. I'm talking about not having any bindings listed at all for HTTP.

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• TightVNC (or any VNC) viewer windows scaling

  - by mr.b

  Hi, I am currently using TightVNC to connect to multiple remote hosts in LAN. I start 16 VNC viewers, set Scaling by: Auto (in connection options display), and then select all viewer windows and use Tile Horizontally, which covers my entire screen with VNC viewers. It all works sort of nice, except that desktop interaction is really slow when there are more then 4 VNC viewers. My question is, does VNC client (not just TightVNC, but any compatible client) support some kind of smart scaling option, so that client tells server something along the lines of: "Okay, I'm displaying your entire screen in a window size 300x225 px, so can you please start sending encoded images on that resolution?", at which point interactiveness of open connections dramatically increase, and when I decide to go full screen on some connection, client and server re-negotiate and server starts sending full resolution images again? Thanks!!

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• VPN using Zywall

  - by Rune FS

  I've played around with a certificate based VPN (normally I don't do hardware) we've manged to setup the connection and the tunnel between the routers is working correctly. We now need the last step. There's no connection to the computers on the other end. What could we have forgotten? (we're testing with two standard configured Win7 machines) EDIT: Just to clarify the tunnel is working I can ping the router on the other end. I can't access the computers on the other side of that router and vice versa. (It's also possible to access the remotemangement console of the remote router on the LAN IP)

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• USB drivers installed twice

  - by stupid-phil

  Hello, I have a problem with usb drivers on Windows 7 64bit When I start up my laptop, the mouse I have plugged into a usb port does not work. I have to open the device manager, where there are two "Standard Enhanced PCI to USB Host Controller" entries. One is marked as faulty (yellow triangle). I uninstall this. Scan for changes. Then it re-appears, but not marked as faulty. And the mouse works. I have to do this every time I reboot. A colleague has the same problem. Both DELL laptops, but different models. I've tried uninstalling all USB controllers, but after a reboot, they are all reinstalled with the faulty entry. This only started happening in the last few weeks. Any help appreciated. It's driving me nuts. Thanks Phil

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• Is it possible to use the MMM tool without virtual IP capability?

  - by Artem

  We are on a host (Serverbeach) that does not support Virtual/floating IPs until you reserve at least a half-rack, which is just a little more than we are willing to spend per month right now. We do have 2 machines in one of their datacenters, and I am using these 2 machines right now in the Master-Master in Active-Passive Mode just like done by MMM -- http://mysql-mmm.org/. I have just set them up and I managing them manually, with manual switch on the Web frontend to tell it to connect to the correct (active) master. Is there any way to use MMM without virtual IPs? Any other comments on this setup?

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