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• Network Time is being set by "something"

  - by AliGibbs

  Something is setting (the incorrect) time on our network- though I don't know what it is (since we have approx 40 servers). We run on a windows network, with AD etc. Not sure where to even begin to start looking- as far as I know, we don't run an NTP server in house. Any advice? Thanks

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• scp stalls and ssh sessions freeze up (but eventually start again)

  - by coleifer

  I am running ubuntu on various computers on a home network. Some are on 9.04x64, some 10.04x64 and one 9.04x32. Running scp with a large file starts out at 2.1 mbps and drops down to about 200k, stalling and dropping until the transfer is complete. I've noticed this when I have a secure shell open on any of these servers as well. I have tried this with 2 different routers, both brand new, different brands.

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• Testing the load factor in my lab

  - by Ami Winter

  I am a system admin in a lab, I have ~90 computers in the lab and I want to check the load factor on them.. meaning, to check how many people are working on the computers hourly.. To see if I need to buy more computers or not. I am looking for a way to build a script to check if a computer is logged on or not.. (0 for log off - 1 for log on) After I will have this data, I know how to build a script to build me the graphs. All the computers are linked via a domain and most of them have windows XP (few windows 7) I'll be happy to get some help. Amihay

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• Is DNS propagation still slow?

  - by spiffytech

  I've been told to assume it takes as long as 48 hours for a DNS change to propagate throughout the entire Internet, because some DNS servers cache their entries for longer than my TTL. However, for years and across ISPs and domains, every time I've made a DNS change I see the effects within a couple of hours. Is it still true that I need to assume a full two days for everyone to see my changes?

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• Hyperlink to doc file slow opening

  - by mserioli

  I've two excel file with inside some link to .doc and .pdf file. Both excel files and linked files are on a network shared folder. The first excel file is an .xls, the second an .xlsm. While opening link to .pdf file is very fast (the file is open in few seconds) it take a long time to open .doc files (about 40 secs.). I have searched on internet but found no solution at the moment. I have this problem with both excel 2007 and 2010. Does anyone know how to solve this problem? Thanks a lot Marco

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• How to audit a specific folder in Windows Server 2003?

  - by saint

  We have had several cases of file deletion in one of our windows file servers. Server is also a domain controller. Unfortunately we kept the auditing disabled completely due it being such a resource hog. So I was wondering If there is a way to audit a specific folder for a specific security group, for just file and folder deletions within the specified folder. Also is there a recommended third party application for auditing or monitoring. Many Thanks.

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• Providing a static IP for resources behind AWS Elastic Load Balancer (ELB)

  - by tharrison

  I need a static IP address that handles SSL traffic from a known source (a partner). Our servers are behind an AWS Elastic Load Balancer (ELB), which cannot provide a static IP address; many threads about this here. My thought is to create an instance in EC2 whose sole purpose in life is to be a reverse proxy server having it's own IP address; accepting HTTPS requests and forwarding them to the load balancer. Are there better solutions?

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• FFMPEG: how can I see if ffmpeg is installed on a server ?

  - by Patrick

  hi, how can I see if ffmpeg is installed on a server ? I don't have access to command line, only ftp account. I think it is Microsoft Server, not apache, but I'm interested to know how to do it on both servers. thanks

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• File and Printer Sharing / Samba / 139 being blocked but where

  - by Hurricanepkt

  I just set up my new remote office network the problem is i cannot access shared folders to the home office (without turning on the vpn) I control the servers remotely but would really like to access ports 139 and 445. The problem is that they are open on the server side but it appears as though the packets are being dropped before they get get to the server... any way i can tell where the packet is being dropped?

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• MCollective alternative?

  - by WinkyWolly

  I really want to run MCollective on my fleet of servers however there are a large number of untrusted users on each machine which makes using MCollective not ideal in my eyes. I'm aware that there is some things you can do to take precaution but I'm not familiar enough with ActiveMQ / want something that's a bit more mindful of similar environments to mine outside the box. I'm looking for a fact collection like tool essentially. (Tagging under puppet / server since no mcollective tag and I don't have enough reputation to create a new one)

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• How to do client side NFS failover in Linux?

  - by Doug

  I have a CentOS 6.3 client that needs to access NFS storage. There are two NFS servers that serve up the same content stored on a SAN with a clustered filesystem. How do I set up CentOS to failover to the backup NFS server if needed? When I Google, I keep reading that Linux does not support this, but that would be strange since there is plenty of information out there on how to set up a clustered Linux NFS server farm...

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• Is it possible to add wildcard serveralias to virtualhost without modifying httpd.conf manually?

  - by Favourite Chigozie Onwuemene

  Is it possible to add wildcard serveralias (example: *.somesite.com) in an apache server without modifying httpd.conf manually? I use a DNS different from my hosting server and i have added asterisk A record to my DNS to point all request like (test.somesite.com,test2.somesite.com) to my hosting servers IP, but i don't see anyway of adding asterisk serveraliases to apache httpd.conf file in my cpanel. Pls is there a solution?

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• hardware: delay and distinct 'click' before hard drive access

  - by matt lohkamp

  I have a windows 7 box stashed away in my closet, containing (among other things) 2 big HDDs linked together as a mirrored volume - basically a super lazy NAS / media server. I've noticed that when that drive is accessed (whether locally, on the machine itself, or remotely, from another computer, or my xbox, for example) there's a noticeable pause, and then from the computer itself, a 'click!' noise, after which the drive is accessed; e.g. open \\computername\shared\, wait 2 seconds, hear 'click!' and then see files appear in windows explorer. Any ideas? Otherwise the drive preforms normally - is it a windows thing? a HDD-about-to-die thing? Or a "yeah that always happens, you've just never noticed it before" thing?

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• In Outlook 2013, the reading pane does not display images correctly for most emails (but does for some)

  - by smoldyr

  I am running Microsoft Office Outlook 2013 on Windows 7 Enterprise. When I click on an email in the list of messages, the preview of the message in the reading pane usually will not show the images contained in the email, but instead will show a red 'X'. Sometimes this red 'X' is followed by the text "The linked image cannot be displayed. The file may have been moved, renmaed, or deleted. Verify that the link points to the correct file and location." I am using an IMAP email account. The really strange thing is that for some emails, the images will display, although they take a long time to load. How can I make the images show up in the reading pane?

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• Export local security policy

  - by Jim B

  I am trying to export the local security policy on a number of servers into a template file which I can then import into a group policy. I cna do this manually without issue but I have been unsuccesssful in finding a way to script this process. Is is possible to script the creation of the export of local security policy?

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• Backups devices for Windows Server Backup and Symantec [closed]

  - by user137841

  What is the best way to backup windows SQL, Exchange or AD servers data to? NAS, external USB , iSCSI or perhaps some other backup solution? I will not however be considering cloud backup solutions due to bandwidth restrictions and cost. Currently I find NAS devices to give the best results but clients that do not have the budget for backup software use Windows Server Backup but then they can make only 1 backup to a NAS at a time.

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• what's the differences between rsync applications to use for backups?

  - by Thr4wn

  There are many concerns about backing up servers (naturally), and the best responses I found for "backing up best practices" was http://serverfault.com/questions/512/best-practices-to-keep-your-computers-backed-up-efficiently/1076#1076. However, Many people recommended 'rsync', but there are many rsync applications out there (like rsync-backup and duplicity, etc), and I want to know the trade-offs and recommendations for which one to use. Is there one that simply is newer and technically superior to all the rest?

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• DNS Issue Windows 2003 AD-The server holding the PDC role is down

  - by Dave M

  Our network of Windows 2003 and Windows 2008 servers suddenly hasDNS issues. There are 7 DCs. Two at our main office and one each at branch sites (one branch has two a 2008R2 and WIN2K3) Only two are WIN2008R2 Running DCDIAG on the WIN2K3 at main site (DC1) reports no issues. Running at any branch site reports two issues All other test pass. The server DC1 can be PINGed by name from any site Starting test: frsevent There are warning or error events within the last 24 hours after the SYSVOL has been shared. Failing SYSVOL replication problems may cause Group Policy problems. Starting test: FsmoCheck Warning: DcGetDcName(PDC_REQUIRED) call failed, error 1355 A Primary Domain Controller could not be located. The server holding the PDC role is down. Netdom.exe /query DC reports the expected servers. netdom query fsmo This reports the server at the main office holds the following roles: * Schema owner Domain role owner PDC role RID pool manager Infrastructure owner In the DNS management snap-in, DC1 appears as DNS server but does not appear in _msdcs-dc-_sites-Default-First-Site-Name-_TCP There is no _ldap or –kerberos record pointing to DC1 Same issue msdcs-dc-_sites- -_TCP Again there is no _ldap or –kerberos record pointing to DC1 Under Domain DNS Zones there is no entry for the server. This is the case for any _tcp folder in the DNS. The server DC1 appears correctly as a name server in the Reverse Lookup Zone. There is a Host(A) record for DC1 but in the Forward Lookup Zone there is no (same as parent folder) Host(A) for the DC1 server but such an entry exists for the other DCs at branch sites and the other DC at the main office. We have tried stopping and starting the netlogon service, restarting DNS and also dcdiag /fix. Netdiag reports error: Trust relationship test. . . . . . : Failed [FATAL] Secure channel to domain 'XXX' is broken. [ERROR_NO_LOGON_SERVERS] [WARNING] Failed to query SPN registration on DC- One entry for each branch DC All braches lsit the problem server and it can be Pinged by name from any branch Fixing is number one priority but also would like to determine the casue.

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• Set up Gmail with Google apps for own domain

  - by erdomester

  I rent a server from a German company. I have remote access to it as well as WHM and CPanel. I decided to use Google's mail servers for obvious reasons. I am not an admin just an average guy trying to set up what needs to be set up. The problem is I am unable to make the necessary settings. I watched Youtube tutorials, followed written ones as well as Google's help, but there is (at least) one serious problem with my domain settings. The domain console alwasy says Your MX records are incorrect When I check dappwall.com in mxtoolbox.com it says Pref Hostname IP Address TTL 10 mail.dappwall.com 46.4.88.247 24 hrs But this is not the host name. I checked WHM and my hostname is server1.dappwall.com. I can confirm it by typing the hostname command in putty. However, if I do an mx lookup at mxtoolbox.com on server1.dappwall.com or mail.dappwall.com I get Lookup failed after 1 name servers timed out or responded non-authoritatively I ran checks on the google apps toolbox on dappwall.com and two problems emerged: 1.No Google mail exchangers found. Relayhost configuration? 10 mail.dappwall.com In Google Apps > Settings for Gmail > Advanced settings it also says that my current MX records for dappwall.com is Priority Points to 10 MAIL.DAPPWALL.COM. So mail.dappwall.com again. I also have access to a robot provided by the company I rent the server from. Here I see this mail at two places but how should I (if it's necessary) modify this? I set Email routing to Automatically Detect Configuration. 2.There SHOULD be a valid SPF record. "v=spf1 include:_spf.google.com ~all" In the DNS Zone Editor I added this spf record: Name TTL Class Type Record dappwall.com. 1440 IN TXT v=spf1 include:_spf.google.com ~all In the cPanel Email Authentication page it says SPF: Status: Enabled Warning: cPanel is unable to verify that this server is an authoritative nameserver for dappwall.com. [?] Your current raw SPF record is : v=spf1 include:_spf.google.com ~all How can I confirm that my server is an authoritative nameserver for dappwall.com? In WHM Service Configuration Mailserver selection Dovecot was set but I disabled it (i don't know if that's ok). What am I missing here? Where is that mail.dappwall.com coming from?

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• Can I add a second mobile/cell network to my Blackberry Express Server?

  - by cagcowboy

  We have recently installed Blackberry Express Server for our UK Blackberry users (who are on Vodafone, not sure if the network matters) Our US users have got wind of this and are hoping we can do the same for them. (They're mostly on AT&T) The UK & US Exchange mailboxes are based on 2 different exchange servers So... Q. Is it possible to support the US users with the current installation/server configuration?

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• Add Machine Key to machine.config in Load Balancing environment to multiple versions of .net framework

  - by davidb

  I have two web servers behind a F5 load balancer. Each web server has identical applications to the other. There was no issue until the config of the load balancer changed from source address persistence to least connections. Now in some applications I receieve this error Server Error in '/' Application. Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Source Error: The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL: Add a "Debug=true" directive at the top of the file that generated the error. Example: or: 2) Add the following section to the configuration file of your application: Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode. Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario. How do I add a machine key to the machine.config file? Do I do it at server level in IIS or at website/application level for each site? Does the validation and decryption keys have to be the same across both web servers or are they different? Should they be different for each machine.config version of .net? I cannot find any documentation of this scenario.

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• What software creates .snapshot files?

  - by unknown (google)

  I see an incredible amount of .snapshot files on one of my testing servers. What software creates these files? And can I delete them? It's filename pattern looks something like xxx.exe-2009-10-24.

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• OpenDNS-like 404 page in home network

  - by Dmbekker

  People who use OpenDNS and go to a non-existing domain are getting a nice fancy search page telling them that the domain doesn't exists instead of the browser error page. Here in my home network we have a Windows 2008 R2 server with the DNS role enabled. Is there any way to make my own fancy looking error page to show up at all computers when they enter a domain not found by the local DNS server and the forwarders / root hints servers?

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• Does VMware ESX Fault Tolerance (FT) support depend on the CPU only?

  - by user71784

  I'm trying to find out whether VMware ESX 4.x Fault Tolerance (FT) is supported on a particular server and VMware's HCL is confusing me. It says that some servers with FT-supported processors (specifically the Xeon 3400 Lynnfield) do not support FT and some with almost identical specs (same chipset for instance) do support FT. Could this be a mistake on the HCL itself? To my understanding FT support is based only on the CPU. Thanks. RC

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• Finding connection information for federated tables

  - by RainDoctor

  I have a couple of tables with federated storage engine (mysql). But I need to find the connection info for those two tables. Desc command is not helpful. I don't see the table mysql.servers.

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