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• Receive emails on Amazon EC2 Server

  - by Kartik

  I just got started with an EC2 instance and got my mail sending limit removed, allowing me to send emails from my instance. But due to lack of experience, I have no clue on how to enable receiving emails send to me on that server. The instance has an elastic IP and I have a domain name with an A record pointing to that IP. I cant seem to find better documentation on what steps need to be taken so if someone sends an email to [email protected] it either actually receives it or simply forwards it to my personal email. I know that it involves using postfix but cant find a guide to properly configure it after the installation. Thanks

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• Linux stretch cluster: MD replication, DRBD or Veritas?

  - by PieterB

  For the moment there's a lot of choices for setting up a Linux cluster. For cluster manager: you can use Red Hat Cluster manager, Pacemaker or Veritas Cluster Server. The first one has the most momentum, the second one comes by default with RH subscriptions and the last one is very expensive and has a very good reputation ;-) For storage: - You can replicate LUN's using software raid / md device - You can use the network using DRBD replication, which offers a bit more flexibility - You can use Veritas Storage Foundation technology to talk to your SANs replication technology. Anyone has any recommandations or experience with these technologies?

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• The ghost of icons past

  - by Kenneth Cochran

  I am fortnightly( or an approximation thereof) visited by the ghosts of icons, long departed. These apparitions only reveal themselves momentarily after I've logged in then vanish. Returning from whence they came. I've investigated their history and found no clues as to why they continue to haunt me. I sought out an exorcist but those I found were only qualified to expel spirits of humans and demons. Not one had any experience with digital poltergeists. Perhaps praying to Saint William of Redmond will improve the Vista before me. Dost thou agree?

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• It is possible to use the Exchange 2010 web client with an Exchange 2007 mail server?

  - by michielvoo

  We are evaluating our options to upgrade our Windows SBS 2003 server. We are considering Windows SBS 2008, which comes with Exchange 2007 and an extra Windows Server 2008 Standard license. If we also bought Exchange 2010, could we install it on the Windows Server 2008 Standard machine and use the web client in combination with the Exchange 2007 server (that would be hosting the mailboxes)? Is that a supported server role for Exchange 2010? I remember reading about so called front-end server configurations, but I have no experience with that. Thanks!

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• Perforce Proxy Server: Caching selective files [closed]

  - by fbrereto

  I just set up a Perforce proxy server for work. I'm noticing the cache directory is filling up very quickly -- with files I know I will never need. For example, there is a 'sandbox' directory in the depot where users keep personal branches and other work; a p4 sync is causing the p4 proxy cache to grab these user's sandboxes when I'll never need them. I would create a symbolic link for the sandbox directory to /dev/null but then I wouldn't be caching my sandbox, which I am interested in. Is there any way to tell the perforce proxy something to the effect of "if I haven't had to sync it, please don't cache it?"

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• SQL Server 2008 R2 100% availability

  - by Mark Henderson

  Is there any way to provide 100% uptime on SQL Server 2008 R2? From my experience, the downtimes for the different replication methods are: Log Shipping: Lots (for DR only) Mirroring w. NLB: ~ 45 seconds Clustering: ~ 5-15 seconds And all of these solutions involve all of the connections being dropped from the source, so if the downtime is too long or the app's gateway doesn't support reconnection in the middle of task, then you're out of luck. The only way I can think to get around this is to abstract the clustering a level (by virtualising and then enabling VMWare FT. Yuck. Good luck getting this to work on a quad-socket, 32-core system anyway.). Is there any other way of providing 100% uptime of SQL Server?

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• Hyper-V causes boot loop/failure on a non-Gigabyte Win8 Pro system

  - by Nick

  Hardware: Intel i7 2600K (not overclocked, SLAT compatible, virt. features enabled in bios) Asus Maximus IV Extreme-Z (Z68) 16Gb RAM 256Gb SSD Other non-trivial working parts Adding Hyper-V is causing a boot loop resulting in an attempt at automatic repair by Windows 8 after the second or third loop: I'm trying to get the Windows Phone 8 SDK installed and I've narrowed down my troubles to the Hyper-V feature in Win8. This is required to run the WP8 emulator and there are no install options to omit this feature. My first attempt completely borked the OS as I did not have a recent restore point or system image, so I did a completely clean install and made plenty of backups/restore points. I skipped the SDK install and went straight for the windows feature add-on for Hyper-V. This confirmed that Hyper-V is the issue as the same behavior resulted. I cannot find any hint in the Event Logs. Cancelling automatic recovery causes the same behavior to repeat. I don't have any other VM products installed. My only recourse is to use a restore point, try something else, install it again, and see what happens. No luck so far. I'm on my 10th attempt here. Any help would be much appreciated. EDIT: I found a collection of tips here.. http://social.msdn.microsoft.com/Forums/en-US/wptools/thread/b06cc9f2-aa5e-4cb3-9df1-0c273e1dfd68 So i've been attempting various bios settings to resolve this issue with no luck. I've tried setting 'CPUID Limit' to disabled. This seems to work partly as Win8 boots but no USB devices work at all. I also attempted disabling the usb 3.0 controller as the msdn topic lists an issue with USB controllers on Gigabyte boards. This also doesn't work. The USB devices light up but no input is received by the OS. All of my other bios CPU settings are in line with the info in the post. I'm totally stumped. Bios screenshots: http://i.imgur.com/yKN5u.png http://i.imgur.com/Y9wI4.png http://i.imgur.com/F6EuO.png

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• Ubuntu 9.10 X Stuck in restart loop - I think...

  - by widgisoft

  Trying out Ubuntu, installation went fine - upgraded to the proprietary nVidia drivers but on restart I get a login prompt and the screen is flashing really fast almost as if Xserver is trying to start and failing, I can type when the screen isn't in a "flash" as it were and it's so fast and random it's hard to even type a login name without it missing some characters - this makes typing a password (i.e. not being able to see which characters made it or not) very hard. I can log back into the live cd and alter my settings - but I can't even find out how to stop X stop starting on boot; Looks like they've moved everything around :-p I'd like to: Stop X from crashing and going insane (if it is actually Xserver) Know how to stop X from starting on bootup, Looks like interactive boot is also off by default now Update: A temporary work around seems to be enabling ssh and just connecting to the box over the network - ssh seems to work fine :-p Cheers, Chris

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• How to create a virtual input in windows from an audio stream

  - by Brian

  Great to find this forum full of knowledge. I was wondering if anyone knew of an application or other work around to create a virtual input device in windows. I have a IP cam app on my android phone, that I would like to use for skype webcam. It comes with a port for getting the video feed into skype, and that works great. However, the only audio available, is a OGG stream. Both video and audio work great with media players such as VLC etc, but ot with skype, since skype only works with windows input devices. Is there such software outthere, in which I could simply name my audio stream address, and pipe that to a virtual input device to allow skype to find it?

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• Tomcat - virtualhosting - name / ip / port - based

  - by lisak

  Hey, what are the usage scenarios for these kinds of virtual hosting ? Name Based - typical tomcat virtual hosting, one HOME instance with many contexts, each as an individual host IP based / port based - multiple instances of tomcat ( how is it with performance and memory consuption?) running on IP aliases (virtual IPs) for one network adapter, usually behind http apache server that can run name based virtual hostings. Otherwise I can't figure out how would I forward requests in iptables/firewall based on IP address, which is just one. How is IP based virtual hosting done as to Tomcat and multiple instances ? I'd like to hear some usage scenarios from your experience. How are you running your applications. Cause there are applications having it's own modified classloader and they are developed in a way to run alone withing a tomcat instance. Then there are trivial applications which can run within one instance without problems. Many thanks

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• Cannot import video from a DV camcorder over FireWire

  - by qbeuek

  I have a JVC GR-D320 miniDV camcorder that has a FireWire interface. I recently upgraded to Windows 7 RTM (64 bit, fresh installation). When I connect my camcorder through FireWire, I can see it in Device Manager without any warnings or problems, but I cannot capture videos from my miniDV tapes. After connecting, AutoPlay displays "Import Video could not find a compatible digital video device. Verify that the digital video device is properly connected and turned on." When using Windows Live Photo Gallery after selecting the import option, my camera is not listed. The camera used to work perfectly on the same hardware before upgrading to Windows 7 RTM 64 bit (it used to work fine on Windows XP SP3 32 bit). Googleing revealed that people had the exact same problems in Vista, but no solution was provided. Any help?

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• Compressed Folder Wizard - other archive formats

  - by Scott

  Anybody know of a shell extension to make other archive formats, such as RAR, work with Windows' built-in Compressed Folder Wizard?

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• How to drag and drop images from windows explorer to Excel?

  - by Kevin Boyd

  When I drag and drop nothing happens, can you make it work?

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• Installing maven on Ubuntu by manual download

  - by WebDevHobo

  To install Maven, I downloaded the latest version from the website and then followed these steps: http://maven.apache.org/download.html#Installation The last step, the version control, does not work. It says that 'mvn' is currently not installed and that I should type sudo apt-get install maven2 If I go directly to the mvn file itself, it does work: root@ubuntu:~# /usr/local/apache-maven/apache-maven-2.2.1/bin/mvn --version Apache Maven 2.2.1 (r801777; 2009-08-06 12:16:01-0700) Java version: 1.6.0_21 Java home: /usr/java/jdk1.6.0_21/jre Default locale: en_US, platform encoding: UTF-8 OS name: "linux" version: "2.6.32-25-generic" arch: "i386" Family: "unix" So, what am I doing wrong here? Or what would and apt-get install do extra that I might have forgotten?

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• Cage nuts - which way to insert them?

  - by Ingmar Hupp

  Cage nuts can be inserted (in square holes) either with the flaps horizontal or vertical. I've seen and used both methods, but am still not sure which is best. Is there a recommended way of inserting them? If so, why is it the best way? From my own experience, the horizontal way (on the left) seems slightly better for no other reason than making it easier to insert or pry out the cage nut in a full rack (with the units above and below being populated), for example when replacing cage nuts with a snap-in rail. Edit: Major vendors each seem to have their own preference too: Horizontal: IBM, Cisco, APC Vertical: HP (and Compaq), Sun/Oracle, Dell

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• How can I setup my local Nginx server so I can edit the files?

  - by Shane Grant

  I have my local development machine running Arch Linux, Nginx, PHP-FPM and MySQL. In order for the websites I am working on to run the files need to be owned by the http user. The files are currently located in folders like this: /srv/http/site1/ /srv/http/site2/ When I use the following chown command on the http folder the sites work fine, but I cannot edit the files with my user: chown -R http.users /srv/http When I do this the sites do not work, but I can edit the files: chown -R shane.http /srv/http How can I make it so that my user can edit the files, and the web server can run them at the same time? Thank you

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• I can't do a Remote Assistance session to a Windows XP box from Windows 7.

  - by superkinhluan

  My Mom's computer is running Windows XP, and my desktop running Windows 7. She's having some technical issue, so I want to do a Remote Assistance session to her machine. However, no matter what I've tried, the Remote Assistance program doesn't connect successfully. I've verified that the Windows Firewall (on both my and her machines) is configured properly to allow Remote Assistance program to go through. What's interesting is that I have the same problem when I try to do Remote Assistance from my desktop to my laptop, which is also running Windows XP. However, when I try to connect to my girlfriend's machine, which is runninng Windows 7 this time, the connection is successful. So in the end, I guess there must be some incompability between Windows 7 and Windows XP. Does anyone experience the same issue? How did you resolve it?

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• mod_rewite Rule: root/? root/app/views/home/home.php

  - by Jonathon David Oates

  I am shocking at mod_rewite, here's the scenario: I need a rule that rewrites mydomain.com to mydomain.com/app/views/home/home.php. The rule, or set of rules rather, must also rewite mydomain.com/signin to mydomain.com/app/views/signin/signin.php, and work in a similar fashion for any subdirectory, for example: mydomain.com/subdir must redirect to mydomain.com/app/views/subdir/subdir.php. The rules must also work with or without the trailing slash, for example: ….com or ….com/. Thank you all, your help is much appreciated! If you could outline how and why your solution works or direct me to a good resource that explains it, I'd be exceptionally grateful! Edit: I have got a simple .htaccess file with this: Options +FollowSymLinks RewriteEngine On RewriteRule ^$ http://mydomain.local/~Jay/some_awesome_app/app/views/home/home.php This does the redirect but changes the URL in the address bar too! I've not got a trailing [R] flag so why would this be?

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• Can't seem to install the correct version of PHP, using apt-get install

  - by Mark Tomlin

  I'm using Ubuntu 11.04 LTS server, it's a new install on a VPS box from MediaTemple (their ve server). I'm trying to install PHP 5.4.3 on this box, but I'm having a common problem not matter what version I get. I'm trying to get the php-cgi process, so I do the command apt-get install php-cgi and that installs, but does not provide me with the php-cgi executable. I need this so that I can run php-cgi -b 127.0.0.1:9000 and have it has a FastCGI process for my nginx install. Any idea what I can do to get this to work, bonus points if you can get this to work with PHP 5.4.3, because all I can seem to install is PHP 5.3.5.

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• Radeon HD 5770 - DisplayPort Problem

  - by Nick Schmit

  I am trying to set up 3 monitors with the Radeon HD 5770 I recieved a few days ago. I have read that I can use 2 DVI ports and an active DisplayPort adapter for a third DVI monitor. I have purchased this adapter: http://www.accellcables.com/products/DisplayPort/DP/dp_dvid.htm I have the two normal DVI monitors working, but when I try to extend the display to the third, I get a message saying the system has detected a problem with the connection through the display port which may limit resolution/refresh rate. I know that all the cables are fine, I have replaced the adapter, the monitors all work, I have tried different monitors through the adapter, and even nothing but the adapter, but I cannot get any monitor to work using it. I am trying to use 2 Dell monitors and an Acer. Have I overlooked something? Is there a compatibiliy issue I missed? Any suggestions as to what I could try? Thanks in advance.

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• Webserver security, intrusion detection, and file intregrity

  - by enfield

  I would like to add some type of tracking / alerting on some linux webservers running PHP and Apache. In doing searches I have come across a lot of info from 2006-2009. Would like to revisit things and see what others are doing now. The main purpose here is to track when any files are changed and if so alert me somehow. The same goes for IDS and hopefully something that can reside on same server? Since some of these are small scale projects I would prefer opensource/free solutions that are really effective. Although I would still like to hear of other alternatives if someone has the experience and the cost can be justified.

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• Can't find netbooted for Kerrighed pxe boot with Ubuntu Lucid Server

  - by Pengin

  I'm following installation guides for pxe booting and kerrighed. I can't find the package nfsbooted for Ubuntu 10.04. Where did it go? Context: At work I have access to 8 mini-ITX PCs and am trying to build a cluster. My plans include trying Condor, GridGain, Hadoop, and recently Kerrighed has caught my eye. (I reaslise these are all for different kinds of things, I'm just evaluating). Ideally, I'd like to have all the nodes network boot from a single server, since that seems so much easier to manage, plus I can 'borrow' additional PCs for a while without touching their HD. I've been getting on great with Ubuntu Lucid Server (10.04), trying to follow the only guides I can find to get pxe booting (and ultimately kerrighed) to work. This guide is for Ubuntu 8.04 and this one is for Debian. They both refer to a package I can't seem to find, nfsbooted. Has this package been replaced? Am I doing something daft?

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• Recommendations for a JetDirect print server for USB 2.0 printers?

  - by eleven81

  I have been using some older HP JetDirect 300x print servers for a variety of parallel printers over the years. These things work great for every printer I have tried them with, including HP's, Dell's, and even a Mountbatten braille embosser! These have been a boon for printers whose internal network cards fail, but whose parallel ports continue working. I don't have to throw away the $500 printer that is one year and a week old, and can keep using it for many, many years. Now that very few printers are coming with parallel ports, but are coming solely with USB connections and network cards. When the network card fails but the printer is still usable, I want to continue using it on the network with a JetDirect card. In summary: Does anyone have any recommendations for JetDirect cards that will work as well with USB 2.0 printers of unspecified manufacturer that my old JetDirect 300x cards do?

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• Beginners advice on Small business network disk(s)

  - by Rob

  We are having 10 PCs used by various user and presently use one network disk (a LaCie NAS) for all our data. Everything is Windows Vista and our collective IT hardware knowledge is minimal. This worked well generally. However, recently the disk freqently loses connection from the network (2-3 times per week) and the only way back seems to be the "turn it off and back on" trick. This obviously cant be any good for the disk. I understand that there are various more sophisticated ways of storing data and was wondering what people would recommend. One of the worries is obviously disk failure (either in part or as a whole) and the lack of continued availability due to network issues. I would guess that a disk which replicates data wouldnt work as a sole solution due to the network connection, but dont know what hardware (and/or software) would/could work in our case. In terms of size, we are looking at very small amounts, ie. less than 500 GB in total.

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• Is it possible to upgrade Server 2008 to RDP version 6.1?

  - by Dmitri K.

  Problem Server 2008 has RDP 6.0, Server 2008 R2 has RDP 6.1. My application works with RDP ActiveX control 6.1, but does not work with version 6.0 - generates access violation from mstscax.dll. Is there any way to upgrade Server 2008 (not 2008 R2) with RDP 6.1? More details: my application is written in Delphi, the ActiveX control was generated from mstscax.dll version 6.1.7601.17514. Target system where the application doesn't work, has mstscax.dll version 6.0.6002.18356. When the application tries to connect, it generate an access violation exception in mstscax.dll. The way I see it is a compatibility problem. I appreciate any ideas on how to resolve this.

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