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• ipmi - can't ping or remotely connect

  - by Fidel

  I've tried configuring the IPMI controller to accept remote connections, but I can't even ping it. Here is it status: #/usr/local/bin/ipmitool lan print 2 Set in Progress : Set Complete Auth Type Support : NONE PASSWORD Auth Type Enable : Callback : : User : NONE PASSWORD : Operator : PASSWORD : Admin : PASSWORD : OEM : IP Address Source : Static Address IP Address : 192.168.1.112 Subnet Mask : 255.255.255.0 MAC Address : 00:a0:a5:67:45:25 IP Header : TTL=0x40 Flags=0x40 Precedence=0x00 TOS=0x10 BMC ARP Control : ARP Responses Enabled, Gratuitous ARP Enabled Gratituous ARP Intrvl : 8.0 seconds Default Gateway IP : 192.168.1.1 Default Gateway MAC : 00:00:00:00:00:00 802.1q VLAN ID : Disabled 802.1q VLAN Priority : 0 RMCP+ Cipher Suites : 0,1,2,3 Cipher Suite Priv Max : uaaaXXXXXXXXXXX : X=Cipher Suite Unused : c=CALLBACK : u=USER : o=OPERATOR : a=ADMIN : O=OEM # /usr/local/bin/ipmitool user list 2 ID Name Enabled Callin Link Auth IPMI Msg Channel Priv Limit 1 true false true true USER 2 admin true false true true ADMINISTRATOR # /usr/local/bin/ipmitool channel getaccess 2 2 Maximum User IDs : 5 Enabled User IDs : 2 User ID : 2 User Name : admin Fixed Name : No Access Available : callback Link Authentication : enabled IPMI Messaging : enabled Privilege Level : ADMINISTRATOR # /usr/local/bin/ipmitool channel info 2 Channel 0x2 info: Channel Medium Type : 802.3 LAN Channel Protocol Type : IPMB-1.0 Session Support : multi-session Active Session Count : 0 Protocol Vendor ID : 7154 Volatile(active) Settings Alerting : disabled Per-message Auth : disabled User Level Auth : disabled Access Mode : always available Non-Volatile Settings Alerting : disabled Per-message Auth : disabled User Level Auth : disabled Access Mode : always available # /usr/local/bin/ipmitool chassis status System Power : on Power Overload : false Power Interlock : inactive Main Power Fault : false Power Control Fault : false Power Restore Policy : unknown Last Power Event : Chassis Intrusion : inactive Front-Panel Lockout : inactive Drive Fault : false Cooling/Fan Fault : false # arp Address HWtype HWaddress Flags Mask Iface 192.168.1.112 ether 00:A0:A5:67:45:25 C bond0 # /usr/local/bin/ipmitool -I lan -H 192.168.1.112 -U admin -P admin chassis power status Error: Unable to establish LAN session Unable to get Chassis Power Status In summary. It exists on the ARP list so arp's are being broadcast. I can't ping it and can't connect to it. Can anyone spot any glaring mistakes in the configuration? Many thanks, Fidel

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• How does one open multiple tabs in TextWrangler?

  - by Closure Cowboy

  No, I'm not bluffing. I really can't figure this out. The setup: I went to File -> Open, and then selected a directory rather than a file. As expected, a directory tree opened on the left side of my document. Hooray! I can easily view the files' structure in my Rails project. So, I make a few changes in a file, and then I click on a different file in the directory tree. My problem: TextWrangler then asks me whether I want to save my changes. Huh? I say "No", and the new document doesn't open at all. Great. I try hitting Command+N (new document). A new window opens. Ughhhh. How the heck do I open documents in a new tab? Note: I have set the "New & opened documents" behavior to "Open in the front window". This does not change the behavior described (i.e. when a directory is opened rather than a single file).

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• Software way to cool down an old MacBook Pro

  - by notMacBookProSuperUser

  Hi all, First a little background: I've got lots of computers, including Linux PCs and two MacBook Pro (and a MacMini). My concern is with my 'old' MacBookPro (Core Duo). It really does overheat. Warranty is long void. Years ago (I'd say 2.5 years ago or so) one day it overheated so bad that the battery inflated due to the heat. I got a new battery for free but it's still getting incredibly hot (much other than any other computer I've got: my newer Core 2 Duo MacBook Pro doesn't get nearly as hot as the old one. It s really a pain because I use my old MBP when I m in front of TV, having it on my lap, and it can really become unbearable. I don't want to open that old MBP. On Linux I can force a new CPU 'governor' that decides how the CPU is allowed to operate: it can be 'on demand', 'always max speed', 'always speed x', etc. Does the same exist under MacOS X? Is there a way, say if a 1.86 Ghz Core Duo can run at 1.6 Ghz, to ask MacOS X: "never run this CPU above 1.6 Ghz" ?

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• Coffee spilled inside computer, damaged hard drive

  - by Harpreet

  Today coffee spilled over my table, and some of it (very less) reached the PC case placed under the table. I think little bit of it got inside the PC case through the front. As that happened the fan started running very fast and made noise. I tried to restart to see if it becomes fine, but the computer didn't start again. First it gave an error of "Alert! Air temperature sensor not detected" and didn't start. Next I tried again multiple times of starting the computer but then it gave some memory error. I was not able to start the computer. Incase there's a problem in hard disk or something related to memory, is there any way we can extract our work or data? I am scared if I am not able to extract my work in case some problem occurs like that. What options would I have? Help!! EDIT: I have attached the photo here and you can see the area spilt in red circle. The hard drive electronics have been affected and internal speaker may also have been affected. Any advise on cleaning and if hard drive can work? EDIT 2: Are there any professional services offered to extract data from blemished hard disk, like this one, in case I am not able to run it personally?

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• Facing application redirection issue on nginx+tomcat

  - by Sunny Thakur

  I am facing a strange issue on application which is deployed on tomcat and nginx is using in front of tomcat to access the application from browser. The issue is, i deployed the application on tomcat and now setup the virtual host on nginx under conf.d directory [File i created is virtual.conf] and below is the content i am using for the same. server { listen 81; server_name domain.com; error_log /var/log/nginx/domain-admin-error.log; location / { proxy_pass http://localhost:100; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; } error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } Now the issue is this when i am using rewrite ^(.*) http://$server_name$1 permanent; in server section and access the URL then this redirects to https://domain.com and i am able to log in to app and able to access the links also [I am not using ssl redirection in this host file and i don't know why this is happening] Now when i removed this from server section then i am able to access the application from :81 and able to logged into the application but when i click on any link in app this redirect me to the login page. I am not getting any logs in application logs as well as tomcat logs. Please help on this if this is a redirection issue of nginx. Thanks, Sunny

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• BSOD: PFN_LIST_CORRUPT and IRQ_NOT_LESS_OR_EQUAL

  - by David Lively

  I built a desktop about a year ago that has, until a few weeks ago, been running without a hitch using Windows 7 Ultimate. Recently, the PC started occasionally rebooting with a blue screen indicating a "PFN_LIST_CORRUPT" error. Also, I've seen at least once the error IRQ_NOT_LESS_OR_EQUAL. I seem to remember temporarily connecting an internal DVD burner about the same time this happened. I burned a DVD for another machine and promptly removed the drive. Yesterday, I reformatted the drive and installed Win7 Ultimate x64. During the first install, the PFN_LIST_CORRUPT bluescreen reared its ugly head again. A second install attempt completed with no errors. The fact that this error happened during a clean install leads me to believe that this is not a driver or OS issue. I also ran the memory diagnostic from the Win7 32-bit install DVD. It completed both passes with no errors. Periodically, the screen will flicker, as if explorer or the video are resetting. In the event log, I see a series of 8 or so errors indicating that some services unexpectedly stopped, and were apparently reset. These include an HID service and some others (I don't have a list in front of me). The PC is a Phenom X2 3 Ghz with a 500GB Seagate drive, 4GB of Corsair XMS2 cm2x2048-6400c5c. Anyone know what would suddenly cause a couple of sticks of RAM to go bad?

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• Affordable combined Ruby/Rails/Redmine + Subversion hosting?

  - by Pekka

  I'm a self employed web developer and after nine years of hard work, I'm looking to become a bit more "vagrant" starting next year, do some much-needed traveling and a bit and work off and on, making use of one of the greatest advantages of a programming job: The ability to work virtually from everywhere. For that, I am looking for a reliable hosting company I can entrust my code to in the form of a number of Subversion repositories, and an installation of the Redmine project management tool. As my financial situation may vary during traveling, I am looking for something I can pay up front for a year or two, and is obviously not too pricey. I don't care where the company is located, as long as it's trustworthy and solid, meaning it's not likely to go out of business next month. Does anybody know good recommendations? Preferably from own, personal, good experience. I have looked at CVSDude / Codesion and while they are certainly great, they don't offer Redmine of course, and seem to be aiming toward bigger organizations mainly. What I would need: 2-5 Gigs of space minimum, freely distributable between SVN, and Redmine attachments Unlimited number of Subversion projects Access control (team members / checkout-only accounts / etc.) I don't mind configuring the svn settings on file basis myself I need the possibility to map a custom domain to the package that is hosted elsewhere Frequent backups and access to those backups through FTP or other means I have been running my own virtual server for this until now, but I don't want the hassle, especially on the security side, while I may not always have the internet connection to fix problems that may come up.

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• Nginx, HAproxy, Unicorn, Rails and Node settings

  - by Julien Genestoux

  Our application is currently only a "regular" web app, with no fancy things like streaming HTTP or websockets. It's mostly a Rails app, served by a few (20 on 2 machines) Unicorn workers, proxied by a venerable nginx server which deals with load balancing. This has been working quite well for the past year and the app now serves between 400 and 800 requests per second at any point during the day. We're soon releasing 2 new APIs, which are both served by a Node application : a websocket one, as well as a long polling HTTP one. (the fancy thing like the Twitter streaming API where HTTP connections never end). They both use the same port on node and since the node app is stateless, we can certainly deploy a few of them to handle the traffic. The app (node) is now deployed in 5 instances and are now listening on 5 different 'private' ports on the same host. We need to put something in front of them to load balance, but also something that is able to deal with sockets (either websocket or HTTP streaming) which are intended to stay 'up' for days. The question is then : what? I read somewhere that HAProxy does a better job than Nginx at this. What do you recommend?

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• IIS7 Binary Stream Error

  - by WDuffy

  I'm struggling to understand the problem I'm seeing so please accept my apology if the question is vague. I'm running a classic asp app in IIS7 and everything seems to work fine except for one issue that has me stumped. Basically, files can be downloaded from the server which is done using the sendBinary method of Persits ASP Upload component. This component works fine for uploading etc it's just the downloading I have a problem. The strange thing is, I cannot have a pure asp page that serves the binary file. Everything works fine in II6, but in II7 there is a strange problem. For example this does not work. <% SET objUpload = server.createObject("Persits.Upload") objUpload.sendBinary "D:\sites\file.pdf", true, "application/octet-binary", true SET objUpload = NOTHING %> However, if I put anything in front of the asp code the file is served fine. serve this <% SET objUpload = server.createObject("Persits.Upload") objUpload.sendBinary "D:\sites\file.pdf", true, "application/octet-binary", true SET objUpload = NOTHING %> I can also write something to the response stream first and it works fine. <% Response.Write("server this") SET objUpload = server.createObject("Persits.Upload") objUpload.sendBinary "D:\sites\file.pdf", true, "application/octet-binary", true SET objUpload = NOTHING %> Does anyone have any ideas of what could be causing this or has anyone ran into a similar situation? I'm sure it has something to do with the setup in IIS 7.

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• How to configure mod_proxy_balancer to gracefully fail under high load

  - by bramp

  We have a system which has one Apache instance in front of multiple tomcats. These tomcats then connect to various databases. We balance the load to the tomcat with mod_proxy_balancer. Currently we are receiving 100 requests a second, the load on the Apache server is quite low, but due to database heavy operations on the tomcats, the load there is roughly 25% (of what I estimate they can handle). In a few weeks there is an event happening and we estimate that our requests will jump significant, maybe by a factor of 10. I'm doing everything I can do reduce the load on our tomcats, but I know we are going to run out of capacity, so I would like to fail gracefully. By this I mean, instead of trying to deal with too many connections which all timeout, I would like Apache to somehow monitor average response time, and as soon as the response time to Tomcat is getting above some threshold, I would like a error page displayed. This means that users who are lucky still get a page rendered quickly, and those who are unlucky get a error page quickly. Instead of everyone waiting far too long for their page, and eventually everyone timing out, and the database being swamped with queries which are never used. Hopefully this makes sense, so I was looking for suggestions on how I could achieve this. thanks

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• Homebrew large data cluster access for 2 user levels?

  - by Yegor

  The title probably makes little sense, so here is an example. I have a file hosting site, that serves a large amount of semi-randomly accessed files. The setup is as follows: High horsepower front-end +DB server that also does encoding for files that need encoding Fresh file server, which stores newly uploaded content, thats probably (and usually) rapidly accessible, which has 500GB of raided SSD storage, that can push over 3GBit of traffic. 3 cheap node servers, containing 2 x 750GB SATA drives in raid1, where files older than 2 weeks are archived, from the SSD server (mentioned above). Files on each server are accessed via subdomains (via modsec) in a straight forward fashion (server1.domain.com, server2.domain.com, etc) Where I have the problem is this. I introduced a "premium" service where people pay a small fee every month, and get ad-free, quick accesses to stuff on the site. Once they are logged in, they access same files via premium.server1.domain.com via a different modsec script, with a different pass phrase. That all works fine and dandy.... except the cheap node servers are all IO bound, so accessing the files on them via a different, unsaturated network makes no difference, since it cannot read off the drive fast enough. What would be a good way to make files on the site be accessible via 2 different network routes, 1 of which will be saturated (the "free network") while all other files are on an un-saturated "premium" network?

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• Exchange Connector Won't Send to External Domains

  - by sisdog

  I'm a developer trying to get my .Net application to send emails out through our Exchange server. I'm not an Exchange expert so I'll qualify that up front!! We've set up a receive Connector in Exchange that has the following properties: Network: allows all IP addresses via port 25. Authentication: Transport Layer Security and Externally Secured checkboxes are checked. Permission Groups: Anonymous Users and Exchange Servers checkboxes are checked. But, when I run this Powershell statement right on our Exchange server it works when I send to a local domain address but when I try to send to a remote domain it fails. WORKS: C:\Windows\system32Send-Mailmessage -To [email protected] -From [email protected] -Subject testing -Body testing -SmtpServer OURSERVER (BTW: my value for OURSERVER=boxname.domainname.local. This is the same fully-qualified name that shows up in our Exchange Management Shell when I launch it). FAILS: C:\Windows\system32Send-Mailmessage -To [email protected] -From [email protected] -Subject testing -Body testing -SmtpServer OURSERVER Send-MailMessage : Mailbox unavailable. The server response was: 5.7.1 Unable to relay At line:1 char:17 + Send-Mailmessage <<<< -To [email protected] -From [email protected] -Subject testing -Body himom -SmtpServer FTI-EX + CategoryInfo : InvalidOperation: (System.Net.Mail.SmtpClient:SmtpClient) [Send-MailMessage], SmtpFailed RecipientException + FullyQualifiedErrorId : SmtpException,Microsoft.PowerShell.Commands.SendMailMessage EDIT: From @TheCleaner 's advice, I ran the Add-ADPermission to the relay and it didn't help; [PS] C:\Windows\system32Get-ReceiveConnector "Allowed Relay" | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -E xtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient" Identity User Deny Inherited -------- ---- ---- --------- FTI-EX\Allowed Relay NT AUTHORITY\ANON... False False Thanks for the help. Mark

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• Disconnect from PHP after output generated

  - by Oli

  I have a LEMP stack. Nginx sitting in front of PHP-FPM. Because some of the sites are heavy and there's OPCode caching, PHP is set up so that there are only 5 child processes running. The aim being that each child can deal with any request in less than half-a-second and then move onto the next request. One problem I've found is that if it's a big chunk of HTML that's getting sent out, and the user has a slow connection, that PHP thread stays occupied until they've finished downloading. Because of my current setup, I have a pretty unforgiving timeout inside PHP where the script is killed after 20 seconds. This is to make sure everybody gets a turn but on a slow connection, this can mean the user gets cut off with a 504 Gateway timeout. I was wondering if there was some sort of buffer solution that I could implement within or just behind Nginx that sent the request through and then... well... buffered the content into its own cache and feed that onto the client as and when they could download it. The aim being that the underlying PHP thread can be freed up. What I'm asking for doesn't have to be PHP-specific. Anything that deals with FastCGI, or even any Nginx-upstream might have a similar issue to this.

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• How do I load balance between two Linux machines?

  - by William Hilsum

  Inspired by the Stack Overflow network, I am now obsessed with HAProxy and trying to use it myself. At the moment, each HAProxy box has got two network cards (well, two configured, I can have a maximum of 4 and wasn't sure if they needed their own one for management between the boxes). On both machines, the backend one (eth1) is a private IP that goes to a switch connected to the webservers, and the front facing one (eth0) has a public internet IP that is routed straight though. In addition, I have created an additional virtual ip for eth0 called eth0:0 which has got a third public ip address. I just about get how to use it for load balancing between multiple web servers that are behind it, but, I am failing to load balance between the two HAProxy boxes - they appear to fight for the virtual IP, but, this does not appear to be a smart solution. Now, by using the virtual shared IP address, this solution appears to work and does seem to give me maximum uptime, but, is this the correct way to do it, or is there a smarter way? I have been looking at other Linux packages such as keepalived, but, I have only been using Linux (server) for a week now and am at the limits of my understanding. Is there anyone who has done this before and can you advise anything for maximum uptime?

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• Mac OS X duplex printing problem: one- vs. multi-paged documents

  - by Christian Lindig

  I like to print on pre-printed stationery using the Preview.app and a duplex-capable HP Color Laserjet 4700 (PostScript) printer. The print dialog handles one and two-paged documents differently: the paper needs to be placed differently into the tray if the document contains one page versus when it contains two pages. This is not obvious when printing on plain paper but becomes obvious when front and reverse side of sheets are marked. Otherwise the first page would end up on the reverse side of the first sheet. I believe the problem is caused by the printer driver setting duplex printing to false (using the PostScript setpagedevice operator) when emitting a single-page document versus keeping it set to true when emitting multi-page documents. All this despite that duplex printing is always specified in the printer dialog. When printing a single-sided document, duplex=true and duplex=false seem to make a difference with respect which side of a sheet gets printed on. It would be also helpful if others could confirm the problem actually exists. I suspect this problem is not limited to specific printers. I'm on OS X 10.6 and I checked two different HP printers.

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• Web page layout becomes broken when moved to live.

  - by Moses

  I want to preface my question with the fact that I'm only a front-end web developer, so please excuse my gross lack of knowledge in this area. My company has three webservers: one for development (IIS v5), one for staging (IIS v5), and one for live deployment (IIS v6). Staging is an exact mirror of live. When I compare the staging and live web pages side by side in Firefox (3.6), the pages are identical. However, when I compare the staging and live pages with Internet Explorer (8), there are major differences... In staging, the squares for bulleted lists are small. In live, the squares are big. In staging, the borders for tables are thick. In live, the borders are thin. In staging, an ASP generated image is the proper height. In live, the image is cropped at the bottom by about 10px. In the end, the layout on live became broken because of these tiny differences, but why? Does the fact that live is on IIS 6 and staging is on IIS 5 account for the small variance in display? And is there any way I can change this server side? Also, is there any reason why Firefox displays both correctly and IE displays both incorrectly?

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• SharePoint extranet security concerns, am I right to be worried?

  - by LukeR

  We are currently running MOSS 2007 internally, and have been doing so for about 12 months with no major issues. There has now been a request from management to provide access from the internet for small groups (initially) which are comprised of members from other Community Organisations like ours. Committees and the like. My first reaction was not joy when presented with this request, however I'd like to make sure the apprehension is warranted. I have read a few docs on TechNet about security hardening with regard to SharePoint, but I'm interested to know what others have done. I've spoken with another organisation who has already implemented something similar, and they have essentially port-forwarded from the internet to their internal production MOSS server. I don't really like the sound of this. Is it adviseable/necessary to run a DMZ type configuration, with a separate web front-end on a contained network segment? Does that even offer me any greater security than their setup? Some of the configurations from a TechNet doc aren't really feasible, given our current network budget. I've already made my concerns known to management, but it appears it will go ahead in some form or another. I'm tempted to run a completely isolated, seperate install just for these types of users. Should I even be concerned about it? Any thoughts, comments would be most welcomed at this point.

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• How do I stop VLC from stealing my volume buttons

  - by MGOwen

  when I press the volume buttons on my laptop, usually the system volume is changed. However, when I do this with VLC it "steals" the presses and adjusts it's own "volume" instead. The system volume is also changed. I can't find any way to turn this off in VLC. Does anyone know? Update: Sorry, some more details I should have included originally: VLC VERSION: 1.1.4 (and a few previous releases, back to about 1.1.0 or so, I think) OS: Win Vista Pro 32 HARDWARE: Dell 1720 laptop (the volume buttons are little buttons on the front of the unit, they may work something like "media" keyboard volume buttons) Update: The buttons seem to map to Ctrl+Alt+b and Ctrl+Alt+c (according to the shortcut key box in windows shortcut properties) but the VLC advanced preferences hotkeys screen doesn't list these as the keys it uses for volume. I changed it so there are no volume hotkeys in VLC settings - no luck it still steals the presses and adjusts the volume. Also, pressing Ctrl+Alt+b or c doesn't change my system volume, so who knows what windows or VLC are doing to recognise those volume buttons. :(

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• How do I repair my Logitech Anywhere MX?

  - by Stefano Palazzo

  My Anywhere Mouse has got mushy mouse button syndrome. That is, the left mouse button feels a little bit soft, and it easily double clicks, let's go when I drag something. Before I repair it at home, rather than bringing it to the store (I kind of need it, it's the only one I have), I'd like to know exactly what I'm doing. It'd be too bad if I tried to repair it, voided the warranty and didn't succeed. I'm guessing there are screws to open it under the rubber pads. And I suppose I can take those off without breaking them, and put them back on without bending them. How is this mouse held together, and what's the safest way to open it? Once I have it open, will I be able to fix the problem? What's causing the mushy mouse button? Here's what I know so far: It might be the switch itself that's broken, in which case I shouldn't open it (I can't get a replacement, voiding the warranty to "have a look" seems pointless) If there are screws underneath the rubber pads, they're only on the 'front', the back two thirds of the mouse are all battery cover: There's nothing I can see under the batteries either. In the mouse I had before this one, there were sort of springy things connecting the actual button with the switch soldered to the board. They were just lying inside of a bit of plastic, and I could swap the left and right ones easily. If repairing it is more difficult, transferring the problem to the right mouse button would be a very good start.

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• chrooted sftp user with write permissions to /var/www

  - by matthew

  I am getting confused about this setup that I am trying to deploy. I hope someone of you folks can lend me a hand: much much appreciated. Background info Server is Debian 6.0, ext3, with Apache2/SSL and Nginx at the front as reverse proxy. I need to provide sftp access to the Apache root directory (/var/www), making sure that the sftp user is chrooted to that path with RWX permissions. All this without modifying any default permission in /var/www. drwxr-xr-x 9 root root 4096 Nov 4 22:46 www Inside /var/www -rw-r----- 1 www-data www-data 177 Mar 11 2012 file1 drwxr-x--- 6 www-data www-data 4096 Sep 10 2012 dir1 drwxr-xr-x 7 www-data www-data 4096 Sep 28 2012 dir2 -rw------- 1 root root 19 Apr 6 2012 file2 -rw------- 1 root root 3548528 Sep 28 2012 file3 drwxr-x--- 6 www-data www-data 4096 Aug 22 00:11 dir3 drwxr-x--- 5 www-data www-data 4096 Jul 15 2012 dir4 drwxr-x--- 2 www-data www-data 536576 Nov 24 2012 dir5 drwxr-x--- 2 www-data www-data 4096 Nov 5 00:00 dir6 drwxr-x--- 2 www-data www-data 4096 Nov 4 13:24 dir7 What I have tried created a new group secureftp created a new sftp user, joined to secureftp and www-data groups also with nologin shell. Homedir is / edited sshd_config with Subsystem sftp internal-sftp AllowTcpForwarding no Match Group <secureftp> ChrootDirectory /var/www ForceCommand internal-sftp I can login with the sftp user, list files but no write action is allowed. Sftp user is in the www-data group but permissions in /var/www are read/read+x for the group bit so... It doesn't work. I've also tried with ACL, but as I apply ACL RWX permissions for the sftp user to /var/www (dirs and files recursively), it will change the unix permissions as well which is what I don't want. What can I do here? I was thinking I could enable the user www-data to login as sftp, so that it'll be able to modify files/dirs that www-data owns in /var/www. But for some reason I think this would be a stupid move securitywise.

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• Why does Exchange 2003 silently reject emails with large attachments?

  - by Cypher

  Our environment: Exchange Server 2003 Standard, single instance, running on Windows Server 2003 Standard. configured to not send/receive mail with attachments larger than 10 MB. NDRs are not enabled. The issue: When an external sender sends an email with an attachment larger than 10MB, Exchange, as configured, does not receive the message. However, the sender of that message does not receive any notifications from his own mail server that the message could not be delivered due to attachment size. However, if an external user tries to send an email to a non-existent user, they do receive a message from their mail server indicating that the user does not exist. Why is that, and is there anything I can do about it? It would be nice if the sender received notification that the attachment file size exceeds our limits and their message was never received... Update The Exchange server has a SpamAssassin box in front of it... could that have something to do with it? Here is one of the last lines from SpamAssassin's logs when searching for my test e-mails: mail postfix/smtp[19133]: 2B80917758: to=, relay=10.0.0.8[10.0.0.8]:25, delay=4.3, delays=2.6/0/0/1.7, dsn=2.6.0, status=sent (250 2.6.0 Queued mail for delivery) My assumption is that Spam Assassin thinks the message is OK and is forwarding it off to Exchange. Update I've verified that Exchange is receiving the message and generating an NDR. However, delivery of NDRs are disabled to prevent Backscatter. Is there something that I can do to get Exchange to send a bounce message to the sending mail server (or verify that message is being sent) so the sending mail server can notify its sender of the bounce?

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• How can I proxy multiple LDAP servers, and still have grouping of users on the proxy?

  - by Chris

  I have 2 problems that I'm hoping to find a common solution to. First, I need to find a way to have multiple LDAP servers (Windows AD's across multiple domains) feed into a single source for authentication. This is also needed to get applications that can't natively talk to more than one LDAP server to work. I've read this can be done with Open LDAP. Are there other solutions? Second, I need to be able to add those users to groups without being able to make any changes to the LDAP servers I'm proxying. Lastly, this all needs to work on Windows Server 2003/2008. I work for a very large organization, and to create multiple groups and have large numbers of users added to, moved between, and removed from them is no small task. This normally requires tons of paperwork and a lot of time. Time is the one thing we don't normally have; dodging the paperwork is just a plus. I have very limited experience in all this, so I'm not even sure what I'm asking will make sense. Atlassian Crowd comes close to what we need, but falls short of having it's own LDAP front end. Can anyone provide any advice or product names? Thanks for any help you can provide.

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• nginx reverse proxy to apache mod_wsgi doesn't work

  - by user11243

  I'm trying to run a django site with apache mod-wsgi with nginx as the front-end to reverse proxy into apache. In my Apache ports.conf file: NameVirtualHost 192.168.0.1:7000 Listen 192.168.0.1:7000 <VirtualHost 192.168.0.1:7000> DocumentRoot /var/apps/example/ ServerName example.com WSGIDaemonProcess example WSGIProcessGroup example Alias /m/ /var/apps/example/forum/skins/ Alias /upfiles/ /var/apps/example/forum/upfiles/ <Directory /var/apps/example/forum/skins> Order deny,allow Allow from all </Directory> WSGIScriptAlias / /var/apps/example/django.wsgi </VirtualHost> In my nginx config: server { listen 80; server_name example.com; location / { include /usr/local/nginx/conf/proxy.conf; proxy_pass http://192.168.0.1:7000; proxy_redirect default; root /var/apps/example/forum/skins/; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } } After restarting both apache and nginx, nothing works, example.com simply hangs or serves index.html in my /var/www/ folder. I'd appreciate any advice to point me in the right direction. I've tried several tutorials online to no avail.

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• New build won't boot: some fans turning, no beep or video

  - by Dave

  When my new system is powered up, the case fan and power supply fans turn fine. The CPU fan twitches, but never gets going. Although I've heard that with AMDs and Gigabyte motherboards that is not necessary a problem. Hard drive is spinning. However, there is absolutely no indication that anything else is happening. The motherboard, as far as I can tell, does not have an internal speaker, but I harvested one from another machine and plugged it in and still no beeps at all. The monitor screen stays black, on both the integrated VGA and DVI. This is a brand new build, and has never successfully booted. My parts are: AMD Athlon II X2 245 Regor 2.9GHz Socket AM3 65W Dual-Core Processor Model ADX245OCGQBOX - includes CPU cooler) GIGABYTE GA-MA785GPMT-UD2H AM3 AMD 785G HDMI Micro ATX AMD Motherboard - Retail G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL8D-4GBRM - Retail CORSAIR CMPSU-400CX 400W ATX12V V2.2 80 PLUS Certified Compatible with Core i7 Power Supply - Retail SAMSUNG Spinpoint F3 HD502HJ 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive COOLER MASTER Elite 341 RC-341C-KKN1-GP Black Steel MicroATX Mid Tower Computer Case - Retail I also have a DVD burner, but it acts the same whether that is plugged in or not. I'm using the on board video. What I've tried so far: I've switched power supplies, with no difference. I've tried different monitors (of which all are working on other machines) with no difference. I have tried putting it one memory module at a time, with no difference. I have tried the absolute minimum I can think of (power supply into motherboard, power button ONLY plugged into front panel, CPU fan plugged in), with no difference. I appreciate any ideas anyone might have. Do I need to RMA the motherboard? This is my first build, so there might be something obvious. I was very careful in assembly with static; I'm confident nothing was zapped during assembly.

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• IIS 7.5 returning 404 for unknown host names

  - by WaldenL

  This just doesn't seem correct to me, so I'm looking for someone to tell me how I've misconfigured IIS... Configuration is IIS7.5 (2008R2), without SP1. I have IIS 7.5 configured w/several sites. ALL sites have hostnames defined in the bindings, there is NO site w/out a hostname. However, if I request an unknown hostname from the server IIS (technically Microsoft-HTTPAPI/2.0) return a 404 error, not a 400 error. I would expect a 400 (or some other major error) rather than a lowly 404. This causes a problem when I have nginx in front of multiple IISs and want to stop a site so nginx takes it out of rotation. Since IIS still returns a 404 for the request even when there is no active site for that name, nginx doesn't know the server is dead. NB: IIS returns the 404 regardless of whether there is a server, but it's stopped, or there is no server. Thoughts? Solutions? -- Additional info: OK, I added a site on a port other than 80 (5000) and then on a connection to that port asked for a site that doesn't exist, and I get the expected error 400 (Invalid hostname). So, while IIS isn't listening for generic (no host name) connections on port 80 it would seem that something is. Any ideas how to get HTTPSys to dump the list of what it's listening for?

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