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• Limited bandwidth and transfer rates per user.

  - by Cx03

  I searched for a while but couldn't find anything concrete, hopefully someone can help me. I'm going to be running a Debian server on a gigabit port, and want to give each user his/her fair share of internet access. The first objective is easy - transfer rates (speed) per user. From what I've looked at, IPTables/Shorewall could do the job easy. Is this easy to setup, or could one of you point me at a config? I was hoping to limit users at 300mbit or 650mbit each. The second objective gets complicated. Due to the usage of the boxes, most of the traffic will be internal network traffic that does NOT get counted to the quota. However, I still need to limit the external traffic, and if they go over, cut off access (or throttle traffic to a very low speed (10mbit?)). Let's say the user has a 3TB external traffic limit. The IF part is: If the hostname they are exchanging the traffic with DOES NOT MATCH .ovh. or .kimsufi. (company owns multiple TLDs), count to the quota. Once said quota exceeds 3TB, choke them. Where could I find a system to count that for me? It would also need to reset or be able to be manually reset on a monthly basis. Thanks ahead of time!

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• Vagrant VM Fails to Boot

  - by Rob Wilkerson

  I have a Vagrant environment that requires me to forward port 80 so I bring it up under sudo on an OS X machine. This has always been fine until I recently upgraded to Vagrant 1.2.2. Now it fails to boot. [default] Waiting for VM to boot. This can take a few minutes. [default] Failed to connect to VM! Failed to connect to VM via SSH. Please verify the VM successfully booted by looking at the VirtualBox GUI. Because I'm running under sudo, the machine never gets added to the Virtualbox GUI, but that's always been the case for this environment. I don't get any indication that there was a problem with the additions -- a potential source of this error, from what I've read. I can bring things up just fine if I change to using port 8080 on the host machine. I can't use the app, but the VM itself loads up and provisions nicely. As far as I can tell, the only thing that's changed is: I upgraded my Vagrant version I updated the project's Vagrantfile to use v2 syntax. Anyone have any idea what I might be missing? I thought I'd be able to find this pretty easily, but it's quickly becoming a very real problem.

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• Why are SIP calls via my server silent?

  - by Archcode

  I have FreeSWITCH SIP server up and running. It has public IP and sits behind 1-to-1 NAT (it's Amazon EC2 instance actually). I can connect to it, make a call to other endpoint (namely, my android device to my pc and vice versa) and signals are send with no problems (call, answer, hangup, etc). Unfortunately, and what drives me crazy, that's all: no audio gets through, no video either. Server does not throw errors, it reports many retransmission though, looks like this: switch_rtp.c:915 [ zrtp engine]: WARNING! HELLO Max retransmissions count reached (20 retries). ID=15 Codecs are set up correctly (same config worked locally on my LAN). NAT/firewall on client side may be a problem, signals do get through (perhaps due to fixed port, data streaming runs on random one, that is currently my best bet). STUN/TURN/ICE setting on client seem to have no effect. Endpoints sit behind symmetric NAT. On server there are no iptables rules, security group is set as suggested there: http://wiki.freeswitch.org/wiki/Firewall Help, please. How to make it work or at least diagnose what's wrong?

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• How to restore Active Desktop if Themes is locked via GPO?

  - by pepoluan

  My company forces Active Desktop upon everybody so that it can display a (monthly-rotated) corporate wallpaper.jpg. Problem is, some computers (including my laptop) somehow experienced some errors resulting in the dreaded "Active Desktop Recovery" screen to show up... and clicking the "Restore My Active Desktop" button always resulted in "Internet Explorer Script Error". Various workarounds I found in the Internet either does not work or requires me to change the theme first to something else... and the latter I can't do because the Desktop Settings screen is locked via GPO. As it happens, due to the nature of the programs I use, I'm granted Administrator-level access on my computer. The question is: How do I fix my situation? Note: I don't need to put on my own wallpaper, but watching the "Active Desktop Recovery" screen (with its BLANK WHITE!!1! OH MY EYES!1!!one!eleven!! background) gets tiresome. I'm quite happy with the corporate wallpaper. I just need to somehow 'recover' my Active Desktop. More information: OS: Windows XP Professional SP3 (yeah, company's too afraid to even experiment with Windows 7) Antivirus: Symantec Endpoint Protection If you need any additional information, feel free to ask.

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• Pull network or power? (for contianing a rooted server)

  - by Aleksandr Levchuk

  When a server gets rooted (e.g. a situation like this), one of the first things that you may decide to do is containment. Some security specialists advise not to enter remediation immediately and to keep the server online until forensics are completed. Those advises are usually for APT. It's different if you have occasional Script kiddie breaches. However, you may decide to remediate (fix things) early and one of the steps in remediation is containment of the server. Quoting from Robert Moir's Answer - "disconnect the victim from its muggers". A server can be contained by pulling the network cable or the power cable. Which method is better? Taking into consideration the need for: Protecting victims from further damage Executing successful forensics (Possibly) Protecting valuable data on the server Edit: 5 assumptions Assuming: You detected early: 24 hours. You want to recover early: 3 days of 1 systems admin on the job (forensics and recovery). The server is not a Virtual Machine or a Container able to take a snapshot capturing the contents of the servers memory. You decide not to attempt prosecuting. You suspect that the attacker may be using some form of software (possibly sophisticated) and this software is still running on the server.

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• Understanding Unix Permissions (w/ ACL)

  - by Dr. DOT

  I am trying to set permissions on my server properly. Currently I have a number of directories and files chmod'd at 0777 -- but I am not comfortable with it being this way. So at the advice of a serverfault specialist, I had my hosting provider install ACL on my shared virtual server. When I FTP to the server as my FTP user account "abc", I can do everything I need to do (and rightfully so) because all my dirs and files are owned by "abc", the group is "abc", and the 1st octet is set to 7 (rwx). That much I get. But here's where it gets dark gray for me. PHP is set to user "nobody". so when someone browses on of my web pages that either ends in .php or has some embedded PHP, I assume the last octet controls the access. Because all my dirs and files are owned by "abc" and assigned to group "abc", if the last octet was a 4 (r--) then the server would let the browser read the file. If it were a 6 (rw-) then the server would let the browser also write to the file or directory, correct? what if the web document does not end in .php or does not have any PHP embedded? What is the user then? how can I use ACL to not set the permission to 6 (rw-) or even 7 (rwx)? [not sure what execute does or means] Just looking for some sort of policy settings to best lock down my dirs and files while allowing my PHP scripts to do uploads and write to files (so my users don't call me to tell me "permission denied". Ok, thanks to anyone out there willing to lend me a hand. It is greatly appreciated.

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• Mysqld shutting down by itself

  - by AJ Naidas

  I'm running a Wordpress Blog that gets medium-high traffic. It is hosted in an Ubuntu Server 2GB Memory 2 Core Processor 40GB SSD Disk, 3TB Transfer. The problem is that MySQL shuts down by itself after an hour or two. I had to restart mysql each and every time this happens. I checked the logs and this is what I found: 140612 6:48:14 [Warning] Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead. 140612 6:48:14 [Note] Plugin 'FEDERATED' is disabled. 140612 6:48:14 InnoDB: The InnoDB memory heap is disabled 140612 6:48:14 InnoDB: Mutexes and rw_locks use GCC atomic builtins 140612 6:48:14 InnoDB: Compressed tables use zlib 1.2.3.4 140612 6:48:14 InnoDB: Initializing buffer pool, size = 1.4G InnoDB: mmap(1502412800 bytes) failed; errno 12 140612 6:48:14 InnoDB: Completed initialization of buffer pool 140612 6:48:14 InnoDB: Fatal error: cannot allocate memory for the buffer pool 140612 6:48:14 [ERROR] Plugin 'InnoDB' init function returned error. 140612 6:48:14 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 140612 6:48:14 [ERROR] Unknown/unsupported storage engine: InnoDB 140612 6:48:14 [ERROR] Aborting 140612 6:48:14 [Note] /usr/sbin/mysqld: Shutdown complete judging by this line: 140612 6:48:14 InnoDB: Fatal error: cannot allocate memory for the buffer pool I suspect that this is a memory problem, but I would like to hear from the experts here before I conclude. Is this a lack of memory problem? Do you think the value of max_connections in my.cnf (currently 100) is a potential cause and needs increasing? TIA.

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• I have bought a custom domain and am using it with Gmail. All My mail is being sent as spam. What can I do?

  - by Leonnears

  A while ago, I purchased my own custom domains for my websites. Before I moved them to Gmail, I just created the e-mails in my CPanel at Bluehost.com and worked from there. When the setup was like that, I could send and receive e-mail fine, and it wouldn't be marked as spam. Now I have moved these custom domains to send and receive e-mails at Gmail using Google apps. I have done everything. I have marked the domains as "Authorized" and I believe that should be enough for the mail I send with these custom e-mails is not send as spam. If it matters, I have configured my iPhone to use these custom domains with it and I'm sending all the e-mail from it. What can I do? I started doing all this today but apparently the DNS changes have already taken place. Is there something I have to do, or is it a matter of waiting 48 hours for my mail to not be marked as spam by other providers yet? EDIT: If I send mail via Gmail itself, the mail is delivered fine. If I use my iPhone however, it gets marked as spam.

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• NFS on top of GFS2 - does it work?

  - by Matthew

  We're currently using a NoSQL derivative called Splunk to receive our data. The software supports something called "search head pooling" in which the job-dispatching engine is housed on several servers which share a common storage point. Originally our intention was to use a clustered filesystem like GFS2 because of low latency, stability, and ease of setup. We set up GFS2, and it's working with no issues. However when trying to run the software, it's trying to create lock files, and a bunch of other things that their support team can't quite explain. Ultimate feedback from them was that they only support NFS. Our network administration team heavily frowns on NFS (lack of stability, file lock issues, etc). So, I was thinking about the possibility of setting up NFS on each server in the cluster to act as a wedge layer between the GFS2 filesystem and the software. Basically configure each server to export the GFS2 filesystem's mountpoint via NFS, and then tell each server to connect to that NFS share. That way we aren't introducing any single-points-of-failure should a dedicated NFS server go down, but the vendor gets their "required" NFS share. I'm just brainstorming ways around, so please tear this apart :)

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• Windows 7 mouse multi selection on windows explorer with CTRL and point to select / single click to open

  - by bortao

  This is something that have annoyed me since i changed to Windows 7. I don't do double click for a long time now since windows introduced 1 click selection (Folder Options Click items as follows Single click to open an item). The problem is, when i click Control and hover over the items, they select/deselect automatically every small amount of mouse movement i make. What i want is to select/deselect the items only when i enter/exit them. So to deselect an item im hovering, i have to move the mouse out of it, and then back in. I'm using Intellimouse Explorer official drivers. (edit) Here's another related annoyance: When you are hovering something and move the mouse inside other item (Holding Ctrl) The new item may or may not be selected. If you continue moving the mouse it gets selected/deselected as you move. (more edit) I have found that the parameter HKCU\Control Panel\Mouse\MouseHoverHeight / MouseHoverWidth have some influence here. If it's set to 2, the item select/deselect really quickly as you move the mouse. When set to larger numbers, its slower. But setting to 20 or 200 don't seem to be much different.

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• Linux RAID: Replacing Failed Drive...permanantly

  - by user137519

  Okay, odd question here. I have a server with RAID 5. A drive failed, in a really physically in a really odd way. On the machine it boots and is seen by the BIOS but...no partition can be seen on the drive consistantly (in and out). 2 out of 3 drives working...I made new spare disk and added it, RAID 5 rebuilt clean. All appears well but...when I reboot it keeps trying to use the 2nd drive which doesn't give any partition data, so of course the RAID 5 gets 2 out of 3...again. The status of my drive is as follows: /dev/sda2:Good /dev/sdb2 (drive has physical problem so no partition data) bad, /dev/sdc2:good /dev/sdd2:good. Every time I reboot the mdadm system seems to keep trying to use /dev/sdb which has physical failure (although spins and is detected). /dev/sdd is the new drive I created. I added /dev/sdd to the raid and it rebuilds the raid but this action isn't memorized upon reboot so it keeps listing /dev/sda and /dev/sdc but doesn't use the perfectly good /dev/sdd until I re-add manually. I've tried removing the dead drive with the mdadm tool, but as it cannot see /dev/sdb paritions it will not fail or remove it (says partition doesn't exist). the /etc/mdadm.conf was automatically made on the original OS install which only lists: DEVICE partitions MAILADDR root ARRAY /dev/md2 super-minor=2 ARRAY /dev/md0 super-minor=0 ARRAY /dev/md1 super-minor=1 Basically just the raids to use on boot. I need to remove this semi-dead drive (/dev/sdb) but I'd prefer to know why this is happening before I do. any ideas or suggestions. I supposed I could attempt to clone/replace /dev/sdb (the partitions on drive show up, then disappear shortly after) but given the partition "chester cat" behaviour this seems risky to me and as I have a working "spare" it seems unnecessary. Thanks in advance for your insight.

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• sharing a USB printer in SOHO environment [migrated]

  - by Registered User

  Here is a situation I am facing, there is USB printer which works only on a Windows XP machine, there are other devices in LAN it is a Small Office Home Office environment. How can this USB printer attached to Windows XP machine be shared so that other laptops or users in Network who have Windows 7 or Linux on their laptops can use this printer. The printer model number is Canon Laser Shot LBP-1210 http://www.canon-europe.com/For_Home/Product_Finder/Printers/Laser/LaserShot_LBP1210/index.asp a print server is not available to me I need to make it work in this situation only.What can I do? the clients are unable to connect to this.It is not a network or TCP/IP printer If a from Windows 7 machine some one wants to use this printer so that he can take a print he gets an error while adding the printer to his machine which is a Windows 7 machine (where as the printer is USB printer on Windows XP machine) Start--->Devices and Printers---> Add Printer---> Find Printer by name or IP address--->Selected a shared printer by name-->\\PC-Name-printer3 and select browse it gives a message Windows can not find a driver for Canon LASER SHOT LBP-1210 on the network what does this mean do I need to install some kind of software at client machine or on the machine where printer is present?

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• Cannot terminate process, "already terminated"

  - by felix-freiberger

  On Windows 8, I regularly get processes into a state where I can't terminate them. Skypekit.exe seems to be the process that's most likely to trigger that issue, but other processes can do that, too. When I try to terminate these processes, I sometimes get an "access denied" message, sometimes nothing happens - but every following attempt to kill that process results in an "access denied" message, too, even though I... have administrative rights (and ran the task manager with it) own that process have the right to terminate it "Process Hacker 2" shows a more detailed error message, stating that I couldn't terminate the process because it already is terminated. Still, the process is most definitely still there, because every task manager I tested still can see it. Process Hacker's "Terminator" is unable to kill such a process, but when running the "Close the process' handles" tactic, Process Hacker gets stuck himself, leaving its windows in "not responding". In that state, other task managers are in turn unable to kill Process Hacker. The only way I found to actually end these processes is to shutdown (which works without any problems). Why is this happening? How can I kill these processes?

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• Possible for linux bridge to intercept traffic?

  - by A G

  I have a linux machine setup as a bridge between a client and a server; brctl addbr0 brctl addif br0 eth1 brctl addif br0 eth2 ifconfig eth1 0.0.0.0 ifconfig eth2 0.0.0.0 ip link set br0 up I also have an application listening on port 8080 of this machine. Is it possible to have traffic destined for port 80 to be passed to my application? I have done some research and it looks like it could be done using ebtables and iptables. Here is the rest of my setup: //set the ebtables to pass this traffic up to ip for processing; DROP on the broute table should do this ebtables -t broute -A BROUTING -p ipv4 --ip-proto tcp --ip-dport 80 -j redirect --redirect-target DROP //set iptables to forward this traffic to my app listening on port 8080 iptables -t mangle -A PREROUTING -p tcp --dport 80 -j TPROXY --on-port 8080 --tproxy-mark 1/1 iptables -t mangle -A PREROUTING -p tcp -j MARK --set-mark 1/1 //once the flows are marked, have them delivered locally via loopback interface ip rule add fwmark 1/1 table 1 ip route add local 0.0.0.0/0 dev lo table 1 //enable ip packet forwarding echo 1 > /proc/sys/net/ipv4/ip_forward However nothing is coming into my application. Am I missing anything? My understanding is that the target DROP on the broute BROUTING chain will push it up to be processed by iptables. Secondly, are there any other alternatives I should investigate? Edit: IPtables gets it at nat PREROUTING, but it looks like it drops after that; the INPUT chain (in either mangle or filter) doesn't see the packet.

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• Hyper-V vss-writer not making current copies [migrated]

  - by Martinnj

  I'm using diskshadow to backup live Hyper-V machines on a Windows 2008 server. The backup consists of 3 scripts, the first will create the shadow copies and expose them, the second uses robocopy to copy them to a remote location and the third unexposes the shadow copies again. The first script – the one that runs correctly but fails to do what it's supposed to: # DiskShadow script file to backup VM from a Hyper-V host # First, delete any shadow copies of the drives. System Drives needs to be included. Delete Shadows volume C: Delete Shadows volume D: Delete Shadows volume E: #Ensure that shadow copies will persist after DiskShadow has run set context persistent # make sure the path already exists set verbose on begin backup add volume D: alias VirtualDisk add volume C: alias SystemDrive # verify the "Microsoft Hyper-V VSS Writer" writer will be included in the snapshot # NOTE: The writer GUID is exclusive for this install/machine, must be changed on other machines! writer verify {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de} create end backup # Backup is exposed as drive X: make sure your drive letter X is not in use Expose %VirtualDisk% X: Exit The next is just a robocopy and then an unexpose. Now, when I run the above script, I get no errors from it, except that the "BITS" writer has been excluded because none of its components are included. That's okay because I really only need the Hyper-V writer. Also I double checked the GUID for the writer, it's correct. During the time when the Hyper-V writer becomes active, 2 things will happen on the guest machines: The Debian/Linux machine will go to a saved state and restore when done, all fine. The Windows guests will "creating vss snapshop-sets" or something similar. Then X: gets exposed and I can copy the .vhd files over. The problem is, for some reason, the VHD files I get over seems to be old copies, they miss files, users and updates that are on the actual machines. I also tried putting the machines in a saved sate manually, didn't change the outcome. I hope someone here has an idea of how to solve this.

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• Intel Motherboard Lightning Victim Dies Hard

  - by Stetson RDT

  Today, I have a more hardware-related question. I have an Intel board, and I really do not know which board it is, I built the machine for a relative, but he forgot to keep the documentation. Long story short, the computer was disconnected during a lightning storm, but a lightning strike travelled in via the ethernet cable (It was directly connected to a power brick commonly seen on those long distance ISP Wireless transmitters), and the motherboard was shocked. I am attempting to get this PC going. The problem is as follows: The computer will randomly reboot, just in the middle of anything as it pleases. May load to EFI (or whatever BIOS is nowadays), may load to bootloader, may even get to the OS. But before 5 minutes is up, the system will always die. Out of curiosity, I plugged my voltmeter in to a molex connector. On the 5V side, it gets a good, consistant +5.13V. On the 12V side, it fluctuates, as follows: Upon immediate startup, it soars to 12.11-12.13V. It will now do one of two things: it will immediately jump down to 12.04-12.05V, or hover for about a minute at 12.11-12.13, then jump down. It seems the longer the voltage stays at 12.11-12.13, the shorter the machine will stay running. Also, post codes, whenever the machine locks up, but does not die hard, seem to be between "AA" and "AC". Does this make any sense to anybody? Do you all think this motherboard is salvageable? It was an expensive bugger, and I'd prefer to not replace it.

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• Email Mail Merge via linked Excel sheet

  - by Joe Perrin

  I have a MS Word 2007 document setup as a Mail Merge doc. I am using Excel as the data source. The MERGEFIELD ClientData contains an Excel file (test.xlsx). I want to merge the data from the Excel file listed in ClientData into the respective Mail Merge document. However, whenever I start the Mail Merge the {MERGEFIELD ClientData} field gets resolved only once and does not select the next row from ClientData. So this: {LINK Excel.Sheet.12 "C:\\path\\to\\file\\{MERGEFIELD ClientData}" \a \f 4 \h} Becomes this after starting the merge: {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test.xlsx" \a \f 4 \h} So every Mail Merge doc uses the test.xlsx instead of the respective Excel document specific to the client (i.e test1.xlsx, test2.xlsx, test3.xlsx, etc.) As the merge runs through each Mail Merge doc I expect to see this: {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test.xlsx" \a \f 4 \h} {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test1.xlsx" \a \f 4 \h} {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test2.xlsx" \a \f 4 \h} {LINK Excel.Sheet.12 "C:\\path\\to\\file\\test3.xlsx" \a \f 4 \h} But for some reason this isn't happening. Does anyone have any suggestions? Thanks!

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• wireless to wired internet

  - by Mark T

  My wife uses an old computer which doesn't really like having an internet connection via a USB wireless adapter. I've tried several, and none have been satisfactory. The connection gets dropped often and it is frustrating for her. A wireless card also had the same trouble. Repositioning the computer made no difference. (Two laptops, nearby, connect just fine and stay up, so it isn't the router.) However, the computer always worked well when I had an Ethernet cable connected to it. I know there is a box which will connect to my wireless network and provide an Ethernet cable connection. But the terminology used is so complex, I can't tell what it is I really need. In case that wasn't clear, here it is in different words: What I need is just the opposite of a wireless router. My wireless router takes my cable modem's Ethernet connection and makes it available to wireless clients. What I want is a box which is a wireless client to my wireless router and provides an Ethernet cable connection that I can connect to any device. I need to know the right name for a box with such capabilities. If you know of some inexpensive examples, that would also be helpful. I'm running a wireless G network with a Linksys Router.

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• PHP-FPM processes holding onto MongoDB connection states

  - by Brendan

  For the relevant part of our server stack, we're running: NGINX 1.2.3 PHP-FPM 5.3.10 with PECL mongo 1.2.12 MongoDB 2.0.7 CentOS 6.2 We're getting some strange, but predictable behavior when the MongoDB server goes away (crashes, gets killed, etc). Even with a try/catch block around the connection code, i.e: try { $mdb = new Mongo('mongodb://localhost:27017'); } catch (MongoConnectionException $e) { die( $e->getMessage() ); } $db = $mdb->selectDB('collection_name'); Depending on which PHP-FPM workers have connected to mongo already, the connection state is cached, causing further exceptions to go unhandled, because the $mdb connection handler can't be used. The troubling thing is that the try does not consistently fail for a considerable amount of time, up to 15 minutes later, when -- I assume -- the php-fpm processes die/respawn. Essentially, the behavior is that when you hit a worker that hasn't connected to mongo yet, you get the die message above, and when you connect to a worker that has, you get an unhandled exception from $mdb->selectDB('collection_name'); because catch does not run. When PHP is a single process, i.e. via Apache with mod_php, this behavior does not occur. Just for posterity, going back to Apache/mod_php is not an option for us at this time. Is there a way to fix this behavior? I don't want the connection state to be inconsistent between different php-fpm processes.

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• Rendering a frame is producing noise from speakers in Windows and Linux

  - by Robber

  When any hardware accelerated application is rendering a frame (or many of them) a very short noise is coming from my speakers. This can be a game, a WebGL application or XBMC. When the application/game is rendering many frames per second (like most of them do) the noise is a continuous buzzing that gets higher pitched with higher framerates. This applies to Linux and Windows, so I'd assume it's a hardware problem. The current hardware in the PC is: CPU: Core2Quad Q9550 GPU: Radeon HD 5770 RAM: 2x2GB DDR2 Motherboard: Asus P5QLD PRO PSU: be quiet! Pure Power 530W Screen and speakers: Old 720p LCD TV connected via VGA and aux cable Muting the TV stops the noise, muting Windows doesn't. I tried replacing the PSU first (used a Tagan 700W PSU before) because I thought it was a power problem. It wasn't. I tried replacing the motherboard (used a ASUS P5B SE before) next because I thought it was a sound card problem. It wasn't. I tried the GPU in a different PC because I thought it was a broken graphics card. It worked perfectly fine in the other PC. I thought it might be interference, but moving the audio cable around changes absolutely nothing. I tried using an HDMI cable instead and that did work, but is not an option since my TV has only one HDMI input and I need that for my PS3.

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• #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##

  - by gtaylor85

  I've searched serverfault and found this question pop-up quite a bit. Unfortunately others problems aren't exactly like mine, and because I'm a true beginner I wanted some more "specific to me" help. If you don't mind. I just set-up a new computer for a user. Copied over her auto-populate and archive emails. Her email, for the most part, works fine. But when she tries to send anything to [email protected] she gets the #550 5.1.1 error. If she uses the exchange webapp she does not have the issue. I can send email to BSMITH, and so can everyone else. The user, as far as I can tell from the EMC reports, is the only person having emails sent back to them and only from BSMITH. I have googled the crap out of this, and attempted some of the solutions to no avail. I've looked for the bmith account in the disabled accounts and copied and attempted to add "IMCEAEX-_O=CHILD+20STUDY+20CENTER_OU=FIRST+20ADMINISTRATIVE+20GROUP_CN=RECIPIENTS_CN=BSMITH@mydomain.com" as an X500 email. I honestly am just following instructions though and I don't really understand what it is I'm doing. Diagnostic information for administrators: Generating server: FS2.FS1D.local IMCEAEX-_O=CHILD+20STUDY+20CENTER_OU=FIRST+20ADMINISTRATIVE+20GROUP_CN=RECIPIENTS_CN=BSMITH@mydomain.com #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ## BTW I love this site and only found out about it a few weeks ago. My girlfriend now loves the photo.stackexchange. So thanks for such a helpful community.

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• Hibernation fails; The system cannot find the file specified

  - by GMMan

  Recently I installed Ubuntu 12.04.1 LTS on my Lenovo Y480. Hibernation was working properly after the Ubuntu install, but I was making sure all of the operating systems on my system worked, including OneKey Recovery (recovery partition). It is of note that I installed Windows 7 from scratch with a disk image I downloaded off of my university's DreamSpark program, and further to that I had to image the partition with Paragon Backup & Recovery, repartition to convert the Windows partition to extended, install Ubuntu, and then restore the image. During that process I also used the Windows disc to edit the BCD as to reuse the existing entry for the restored partition. I also used the automated "repair your computer" option. With verification, I noticed that the "repair your computer" option actually wrote to the wrong BCD (the recovery partition), and I mounted the partition and restored the original BCD (from a copy I made earlier), and rebooted. At this point my GRUB broke, and I was able to restore it. At this point hibernation broke. I tried powercfg /h off and powercfg /h on, rebooted, and nothing. Also tried increasing the hibernation file size as directed on this post, but it still doesn't work. Executing shutdown /h yields The system cannot find the file specified.(2). What file? It seems that mounting the system partition sometimes works, but I don't want to keep it mounted in case it gets written to accidentally. How do I permanently fix this?

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• My Samsung R480 laptop freezes for short and inconsistent periods of time.

  - by anonymous

  I have a Samsung R480 laptop running Windows 7. It's great, I love it to death, but every so often it'll start having, for lack of a better term, "hiccups". It would freeze completely, emit a loud BZZZZZZT from the speakers (think when a video freezes and the sound gets stuck), then return to working order all in a span of 0.5~2 seconds. It has happened while I was playing Mass Effect, while I was watching both HD and non-HD videos, and while I was surfing the internet (which I've noticed while watching YouTube videos and playing Entanglement, but also noticed while using Facebook, minus the buzzing sound). My Initial hypothesis was that my GPU or CPU were overheating as it would shut down while playing Mass Effect, but when I turned off my WiFi card hardware using [fn + F9], the problem was resolved. As I currently see it, it could be a problem with my CPU, my WiFi card, or my sound card. It could also be a software related issue, possibly an ill-functioning process. It could be chrome related. A memory leak from chrome maybe? Does anyone know how to resolve this?

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• Combat server downtime by duplicating server and re-routing when main server is down

  - by Wasim

  I have a CentOS server which at times either crashes or gets attacked with DDOS. At the moment I have an off site backup which is filled up with 1.7TB of data. I'm currently paying as much for the backup as I am for the server and I was looking for advice from experienced people as to what option is best to proceed from here. Would it be a viable solution to ditch the offsite backup, and instead purchase an additional server which is an exact duplication of the first server. So if the first server is down, users are re-routed to the second server without noticing the first server is even down. This would create an automatic backup of the first server (albeit not offsite) and relinquish the need for the expensive offsite backup. Is the above solution a true solution to pricey backup or is offsite backup absolutely necessary? How would I go about doing this (obviously it's pretty complex so just links to some reading material or the terminology of the procedure would be great)? Appreciate the help and advice.

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• The Web Hosting Connundrum for "not quite" developers

  - by saltcod

  Hey all, Apologies if this post feels like its been covered elsewhere, but I don't think it has. I've been down a winding web hosting road. To date, I've tried: Joyent, Media Temple, Bluehost, Hostgator, and finally Linode. The reason for switching are likely obvious to everyone: speed. With the exception of the lightening fast Linode, all of the shared hosts are absolutely sloooow. What do do when you're not really a "developer" While I'v grown addicted to the speed of Linode, I really don't feel like its where I should be. I have this nagging feeling in the back of my mind that one of these days (likely soon), I'm going to run into something that i won't be able to figure out and i'll have days worth of downtime. Just the other day, for example, I realized that one of my domains wasn't sending emails. After 4(!) hours looking into the problem, I still can't get sendmail or postfix to work. Four hours!! I want to be a Drupal expert, not a Ubuntu expert That's really the heart of my problem: I spend way too much time learning Ubuntu's ins-and-outs, and not nearly enough time working on Drupal. So here goes: Is there a web host out there anywhere that offers the speed of Linode, but will let me focus on Drupal instead of sys-admin-ing? Thanks! [ I know, I know. There are going to be lots of people who read this saying - "just learn Ubuntu like a real developer". And I get that. I do. But when I work full-time and try and develop some of these sites in my evenings and weekends, I'm really feeling like the sys-admin stuff gets in the way.

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