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• Nginx Ubuntu Postfix Config - Can't connect to incoming IMAP server 'server not responding' but can send mail via outgoing using same details?

  - by daveaspinall

  I'm pretty to new server admin and especially nginx but seem to be getting ok fine apart from accessing my mail via my iPhone? I've changed my domain to 'domain.com' The thing is I can send mail via my outgoing IMAP server but can't connect to the incoming one? I just get the message "the mail server at mail.domain.com is not responding" /etc/postfix/main.cf alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no broken_sasl_auth_clients = yes config_directory = /etc/postfix home_mailbox = Maildir/ inet_interfaces = all inet_protocols = all mailbox_command = mailbox_size_limit = 0 mydestination = domain.com, mail.domain.com, localhost.com, , localhost, localhost.localdomain mydomain = domain.com myhostname = mail.domain.com mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 myorigin = /etc/mailname recipient_delimiter = + relayhost = smtp_tls_note_starttls_offer = yes smtp_tls_security_level = may smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem smtpd_tls_auth_only = no smtpd_tls_cert_file = /etc/ssl/certs/smtpd.crt smtpd_tls_key_file = /etc/ssl/private/smtpd.key smtpd_tls_loglevel = 1 smtpd_tls_received_header = yes smtpd_tls_security_level = may smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom telnet localhost 25 ehlo locahost 250-mail.domain.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN Using the following details to connect: username password hostname: mail.domain.com port: 25 iptables --list Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination I also sent mail to the server as a test and got this missage if it helps? Technical details of temporary failure: [mail.domain.com. (10): Connection refused] I also looked in /var/log/mail.log and it has multiple entries of: postfix/smtpd[12239]: connect from 5acefc9a.bb.sky.com[90.206.252.xxx] Mar 23 06:47:09 new-domain postfix/smtpd[12239]: lost connection after CONNECT from 5acefc9a.bb.sky.com[90.206.252.154] Notice new-domain which is incorrect but the server hostname and hostname in the configs are correct? I recently moves servers and the host has set the primary domain on the service as new-domain.com so this may be the issue? Like I said, it works to connect to outgoing server, but incoming gets the not responding error? Any idea would be much appreciated!

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• file system that allow to specify different RAID level per directory and change it afterward

  - by Adam Ryczkowski

  I have 5 hard drives, where I want to keep my data. Some of my files are more important, and some of them are less. So some of them I wish to put on RAID-6, and for some it RAID-5 is sufficient. It is difficult to predict at the moment of creation of the arrays how much space of each type to declare. What I would do if I didn't hear about zfs, is partition the hard drives into identical 100GB partitions, and as my needs grow, assemble those partitions into md devices using linux-raid. Then, I'd combine those devices using lvm into logical volumes where I'd put my data. So when I'd need more space of e.g. RAID-6, I'd take 100GB partition from each hard drive and assemble them into another RAID-6 md device and would use it as physical storage for the logical volume group dedicated for RAID-6 data. Then I could grow the file system on this logical volume. On top of RAID-6 and RAID-5 Volume Groups (managed by lvm) would reside completely independent file systems, which I'd later merge with multiple mount --bind into a single directory structure that would reflect the logical structure of data rather that of the storage. But now, when I heard about the ZFS with all the performance, data-healing and compression capabilities I cannot stop thinking if it can help me. If so, what do you think would be the best setup?

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• Wifi antenna extension with F-connector/RG-6(RG-59) cable?

  - by rjz2000

  In an older house, the wire mesh in walls surrounding the furnace behave like a Faraday cage and block wifi signals. It is also difficult to lay new cable, however there is television cable to multiple locations due to there once having been a roof-installed, television antenna. It would be relatively trivial to install the wifi router at the center distribution point, then have the antenna broadcasting/receiving the signal plugged in at each of the old television outlets. I assume that it would not be too difficult to find an adapter for SMA <- F-type connectors. The cable is actually RG-59 rather than RG-6, but I assume that it still has relatively good RF isolation along its length, which is no more than a couple hundred feet in any direction. Does anyone know a problem with the idea? Will a router get confused if there is /too little/ interference between the two antenna? Is that length of cable (~100ft) too long for the signal a router broadcasts? I have seen that it is also possible to use old ~$30/each FiOS cable modems available on eBay to extend a network over television cable. However, that seems like a less elegant solution, and might interfere with upnp and dlna services I'd like to have work on a single network. Thanks if anyone has answers or suggestions before I try this project!

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• Wifi antenna extension with F-connector/RG-6(RG-59) cable?

  - by rjz2000

  In an older house, the wire mesh in walls surrounding the furnace behave like a Faraday cage and block wifi signals. It is also difficult to lay new cable, however there is television cable to multiple locations due to there once having been a roof-installed, television antenna. It would be relatively trivial to install the wifi router at the center distribution point, then have the antenna broadcasting/receiving the signal plugged in at each of the old television outlets. I assume that it would not be too difficult to find an adapter for SMA <- F-type connectors. The cable is actually RG-59 rather than RG-6, but I assume that it still has relatively good RF isolation along its length, which is no more than a couple hundred feet in any direction. Does anyone know a problem with the idea? Will a router get confused if there is /too little/ interference between the two antenna? Is that length of cable (~100ft) too long for the signal a router broadcasts? I have seen that it is also possible to use old ~$30/each FiOS cable modems available on eBay to extend a network over television cable. However, that seems like a less elegant solution, and might interfere with upnp and dlna services I'd like to have work on a single network. Thanks if anyone has answers or suggestions before I try this project!

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• What are good systems for managing PHP/MySQL infrastructure?

  - by sbrattla

  I work in a company which is about to migrate most applications from in-house custom built Java/Tomcat applications to Drupal. Due to company policies, applications and websites need to run on in-house servers. This means that we need infrastructure for Drupal (PHP/MySQL) applications. This must have been solved a million times already. I believe this is what web-hosting companies does every day. Even though we work on a much smaller scale than web-hosting companies, i assume it would make sense to look at the task as if we're going to have an internal small-scale web-hosting company. This means that the guys in IT operations could be "responsible" for "offering" web-hosting, while developers could use these "services". We have three environments; dev(elopment), test and prod(uction). It would make sense that developers could log in to a system and create/edit/delete dev and test sites as they'd like. Production sites should be available through the same system, but only available to IT ops. We need to work with clusters of web servers, meaning that an administration system should be capable of creating/editing/deleting sites across multiple servers. I know there's no "this is it" answer to my question; but what would be a good place to start to get going with this? Apart from the actual hardware, what would be a good administration system for this?

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• Windows 7 disk errors after a few hours of runtime

  - by GFK

  I'm having trouble understanding what is going on with my work PC. Whenever I boot it, it runs fine for a while, then starts to randomly show disk errors. The displayed error often contains the message "not enough storage is available to process this command", although depending on the application that fails it can be different. This has happened for weeks now and is getting worse. This is what troubles me: It never seems to impact critical parts of the system (no BSOD, no freeze). Only some applications seem impacted, refusing to function correctly after a while: Outlook 2010 cannot download RSS feeds anymore, Firefox 6 or IE9 cannot download anything bigger than 3MB without failing, Windows Update fails, all msi installers fail, Visual Studio 2010 starts failing in weird manners... It only happens after a while using it (typically 3 hours, but it seems that installing a program or compiling several times makes it shorter) Rebooting solves it (temporarily). The system: The OS is Windows 7 Pro Spanish SP1, 32 bits The system is an HP Compaq 6000 Pro with 4 GB memory (only 3.4GB usable since the system is 32bit), one 500GB hard drive. Installed applications include: Visual Studio 2010, SQL Server 2008 R2, VMWare Workstation 7, Microsoft Security Essentials, Office 2010. Shutting down all related services and processes doesn't seem to change anything. The diagnostics I've run so far: Hard drive : 465GB, 165GB free Process Explorer : physical and virtual memory seem ok (pagefile is 5.3GB, physical memory usage 70%, system commit 39%) Windows Memory diagnostic tool: OK CHKDSK returned: 488282111 KB total disk space. 281668248 KB in 265779 files. 150188 KB in 62949 indexes. 0 KB in bad sectors. 571755 KB in use by the system. The log file has occupied 65536 kilobytes. 205891920 KB available on disk. For non-spanish speakers, that means all ok. SMART diagnostic tools (DiskCheckup) report all values normal. temperatures are in the normal range (HWinfo). The event viewer doesn't seem to contain any significant message. ran CCleaner 3, without any noticeable effect. I was thinking about some file number limit (between Visual Studio projects and other applications, there are around 300.000 files on the hard drive), but I couldn't find any. It's possible there is something related with the use of the temporary folders (it's the only explanation I have for why applications fail but Windows doesn't), but I cannot confirm that. Only thing I cannot find out is if chkdsk reporting 65MB for the log is normal. It seems since Vista it always reports this. Any other cleaning/diagnostic tool you might know of? Edit: I ran several other tools since I first published the question: Seagate SeaTools (the HD manufacturer's analysis tool): complete test run OK. Intel Rapid 10.1 (the HD controller manufacturer's troubleshooting tool): the HD's ok. Microsoft Desktop Heap Monitor: Desktop Heap Information Monitor Tool (Version 8.1.2925.0) Copyright (c) Microsoft Corporation. All rights reserved. Session ID: 1 Total Desktop: ( 46464 KB - 11 desktops) WinStation\Desktop Heap Size(KB) Used Rate(%) WinSta0\Winlogon (s1) 128 3.6 WinSta0\Disconnect (s1) 64 3.8 WinSta0\Default (s1) 20480 3.0 msswindowstation\mssrestricteddesk (s0) 1024 0.2 __X78B95_89_IW__A8D9S1_42_ID (s0) 1024 0.2 Service-0x0-3e5$\Default (s0) 1024 0.6 Service-0x0-3e4$\Default (s0) 1024 0.3 Service-0x0-3e7$\Default (s0) 1024 2.1 WinSta0\Winlogon (s0) 128 1.9 WinSta0\Disconnect (s0) 64 3.8 WinSta0\Default (s0) 20480 0.0 All ok, desktop heap usage < 5% Edit 2: I tried totally resetting my account by creating a new one, logging under this new one and delete the first one (local rights and files), then logging back with this deleted account (it is a domain account). No luck. Also, I found out often the error is "not enough storage is available to process this command". Searching on the internet, I found an old troubleshooting tip (setting a registry key to raise the IRP stack limit, whatever it is) which did not change anything.

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• Textmate add multiline text at end of line

  - by Yuval

  In Textmate, I am able to add text to several lines at once by clicking and holding the Option key and dragging with the mouse. say I have the following lines: foo 1: foo 2: foo 3: I can easily click and hold option and then drag down with the lines to select the text at the end of each line, and then type "bar" once and it will be added to all lines, as such: foo 1: bar foo 2: bar foo 3: bar Fantastic. The problem I run into, is when my lines aren't the same length, as such foo 19: foo 37842342346: foo 503: Now if I want to add text to the end of each line, I have to either do it manually, or choose enough space so that the longest line is not overwritten, as such: foo 19: bar foo 37842342346: bar foo 503: bar This results in a lot of unwanted whitespace in lines that don't need it. Granted, I could easily run a regular expression search to replace all multiple occurrences of a space with a single one, but I was wondering if there's a way to select all ending of lines at once without having to do that. Any idea? Thanks!

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• Web based KVM management for Ubuntu

  - by Tim

  We've got a single Ubuntu 9.10 root server on which we want to run multiple KVM virtual machines. To administer these virtual machines I'd like a web based KVM management tool, but I don't know which one to choose from the list of tools mentioned on linux-kvm.org. I've used virsh & virt-manager on my desktop, but would like a web interface for the server. I tested ConVirt on my desktop, but it failed to pickup KVM machines from virsh / virt-manager, and I could not get KVM virtual machine import to work (only Xen). oVirt looks good, but I can't find out if and how I can install it on Ubuntu 9.10.. (And I'd really rather not waste another few days on testing stuff that might not work in the end.) Can anyone recommend any good web based KVM management tools that are easy to install on Ubuntu 9.10? I'm looking for something that will also allow me to run other services like apache and postgresql besides hosting virtual machines, so preferably fairly lightweight & no dedicated OS installs. We don't need any professional clustering / migration or anything, just something that will let us create, start, inspect, administer & stop virtual machines from a web page. Best regards, Tim Update: Anyone have any suggestions? It's awfully quiet here..

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• User-unique .vimrc file for servers as root user

  - by Scott

  I'm getting thrown into an IDE war at the office, where multiple users have root access on our servers, and like to have everything their own way with VIM. Unfortunately, we have our servers locked down enough to where if you want to do anything, you need to have root access. Obviously (although this is obviously frowned upon), we get tired of typing sudo before each command we type, which would require that we constantly type in our wonderfully complex passwords that are mandated on us over and over again, so naturally we all just execute the sudo su - command upon login to avoid all of this. Of course, when it comes to VIM and custom .vimrc files, we are often times stepping on someone else's custom .vimrc file, and we have some whacked out functionality in these files that users have that may overwrite functionality that we have no idea about, much less have the patience to learn either. When as root on a linux box, is there any way for all of us to still maintain our .vimrc file without having to overwrite the file over and over again every time someone wants to use VIM? Ideally, we have many virtual machines all with VIM installed, so a universal solution across all servers would be best, and we do have our Microsoft Windows user specific home directories mounted on the servers under /home/username. Any recommendations for accommodating this?

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• Recommended Smartphone for Reading PDFs [closed]

  - by mika

  This is as much a software than a hardware question. I use a lot of public transport and perhaps the best way to spend your time there is to read while listening to music. Currently I use Nokia E90 and Adobe Reader LE 2.5 (full version). I was wondering if there are any better alternatives? Requirements: at least 640px wide screen, preferably 800px physical size of the LCD display matters, it should be large, but the phone itself should be as small as possible. This favors touchscreen models PDF reader should be of high quality. It should render most PDFs correctly. Other important features include: full screen mode, keyboard controls for Page Down and page change, multiple zoom levels to adjust to the screen, opening recent documents at the last page read Downsides of E90 + Adobe Reader LE Phone is large compared to the display It is hard to read the display at sunlight Adobe Reader crashes the phone regularly, zoom could have more levels, doesn't remember last page EDIT: Switched to iPhone and GoodReader. Smaller physical screen width compared to E90 is a disimprovement, but other than that I'm happy. GoodReader is the highest quality smartphone PDF reader I've seen so far.

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• Is 2 GB of RAM better than 2.5 GB?

  - by pibboater

  My laptop has two slots for RAM, and currently has two 512 MB chips, for 1 GB. Windows XP is running terribly slow on it, so I want to upgrade the RAM. I could buy two 1 GB chips to replace both of the current 512 MB chips, to give me 2 GB of RAM. Or, the price is the same to buy one 2 GB chip, to replace just one of the 512 MB chips, and give me 2.5 GB total. The RAM it takes is PC2-4200 533MHz DDR2. What do you think would be better: buying two 1 GB chips so it can take advantage of dual-channel operation, or buying one 2 GB chip to end up with more total RAM but not dual-channel operation? Like I said, price is the same, so performance is the only consideration. I'm not doing anything especially intensive like video or photo editing -- just having multiple Office programs open, playing music, browsers, etc., but currently even opening the first application takes forever. If it matters, the laptop is a Toshiba Qosmio G25-AV513 running Windows XP Media Center SP3. Thanks! Kevin

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• Network topology for both direct and routed traffic between two nodes

  - by IndigoFire

  Despite it's small size, this is the most difficult network design problem I've faced. There are three nodes in this network: PC running Windows XP with an internal WiFi adapter.Base station with both WiFi and a Wireless Modem (WiModem)Mobile device with both WiFi and WiModem The modem is a low-bandwidth but high-reliability connection. We'd like to use WiFi for high-bandwidth stuff like file transfers when the mobile is nearby, and the modem for control information. Here's the tricky part: we'd like the wifi traffic to go directly from the mobile to the PC, as rebroadcasting packets on the same WiFi channel takes up double the bandwidth. We can do that with a manual configuration by giving the both the PC and the base station two IP addresses for their WiFi interfaces: one on a subnet shared with the mobile, and one on their own subnet. The routes on the PC are set up so that any traffic going to the mobile via WiModem goes through the secondary IP address so that return traffic from the mobile also goes through the WiModem. Here's what that looks like: PC WiFi 1: 192.168.2.10/24 WiFi 2: 192.168.3.10/24 Default route: 192.168.2.1 Base Station WiFi 1: 192.168.2.1/24 WiFi 2: 192.168.3.1/24 WiModem: 192.168.4.1/24 Mobile WiFi: 192.168.3.20/24 WiModem: 192.168.4.20/24 We'd like to move to having the base station automatically configure the mobile and PC, as the manual setup is problematic when you start having multiple mobiles and PCs. This means that the PC can only have 1 IP address and needs to be treated as being pretty simple. Is it possible to have a setup driven by DHCP on the base station that is efficient with bandwidth?

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• Windows Media Player won't launch on Vista - how to repair or reinstall it?

  - by rpm1200

  My friend asked me to look at her Acer Aspire laptop with Vista Home Premium as it is no longer playing DVDs. I found that Windows Media Player would not launch. I found this thread, which contained a number of suggestions, none of which solved the problem. Here is what I tried: Tried running WMP via desktop shortcut, QuickLaunch bar or going to Program Files\Windows Media Player\wmplayer.exe. In all cases, wmplayer would launch then terminate immediately (verified through the Processes tab in Task Manager). Tried running wmplayer.exe as Administrator. The UAC dialog would come up, I'd approve, then wmplayer would launch and terminate immediately. Uninstalled all non-Microsoft media programs except RealPlayer, iTunes, QuickTime, Acer Arcade (the laptop owner uses all those apps). Tried running Program Files\Windows Media Player\setup_wm.exe as Administrator, it launched but said that a newer version of WMP was already installed. Deleted the "Windows Media" folder located under %userprofile%\appdata\local\Microsoft then tried starting WMP - wmplayer would launch and terminate immediately. Register wmp.dll by typing "regsvr32 wmp.dll" in an Administrator cmd window then tried starting WMP - wmplayer would launch and terminate immediately. Run "SFC /SCANFILE" in an Administrator cmd window - get an error message that it found invalid system files and could not fix them, so look at the log file cbs.log. The log file shows that there are broken files associated with Windows Sidebar (which the user does not use) but none relating to WMP. Log off to safe mode and run "SFC /SCANFILE" in an Administrator cmd window again - same results. Try to download and install XP WMP - the microsoft.com site recognizes the OS as Genuine and allows the download, but when I launch the installer it says the system is not Genuine. Clicking the link directs me back to IE where I can authenticate the system as Genuine. The installer still fails to recognize the system as Genuine. It is a Genuine Vista installation. Try to run this update (KB931621). The installer said it did not apply to the system. Set Windows Media Player as default in Program Access and Defaults. Same results. Tried running "for %a in (%systemroot%\system32\wm*.dll) do regsvr32 /s %a" in an Administrator cmd window - same results. Went to this Knowledge Base article (947541) and ran the Microsoft Fix It. The Fix It ran successfully, but WMP would still launch and terminate immediately. Multiple reboots in the process of doing all of these steps. After all this, looked in the Application and Security logs. No events pertaining to WMP were logged. The computer was preinstalled with Vista Home Premium and I have the Acer backup DVDs which will reimage the drive. I do not have Vista install DVDs. Reimaging the system is not an option. I'd also rather not restore the system to an earlier point unless it's absolutely necessary. What else can I do to repair or reinstall WMP?

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• can't get to admin page after factory reset netgear wg602

  - by stefanB

  I have wireless Netgear wg602 on my home network (connected to my internet modem/router). I've had it secured and locked down to only accept connection from specific MAC addresses. I've forgotten the password that I used but my Mac Book laptops can still connect (multiple OS updates - it can't retrieve and display the password but it can use it to log in to WPA) so I want to reconfigure it from scratch (have some new devices). I tried to reset the Netgear wg602 to factory settings (pressed reset button for 10 sec), reset my laptop IP address to local address suggested in manual (192.168.0.210 net mask 255.255.255.0), connect Netgear via ethernet cable to my mac book pro but I can't get to the admin page at 192.168.0.227 as suggested by manual (firefox or safari). At this stage the Netgear is not connected to router, it is only connected to mac book. I can't ping the wireless access point either (but it is on all lights are on). What am I doing incorrectly? Last time I configured it via Windows now I only have Mac Book (which I've used with the wireless access point for 2 years so no compatibility problems).

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• Does SNI represent a privacy concern for my website visitors?

  - by pagliuca

  Firstly, I'm sorry for my bad English. I'm still learning it. Here it goes: When I host a single website per IP address, I can use "pure" SSL (without SNI), and the key exchange occurs before the user even tells me the hostname and path that he wants to retrieve. After the key exchange, all data can be securely exchanged. That said, if anybody happens to be sniffing the network, no confidential information is leaked* (see footnote). On the other hand, if I host multiple websites per IP address, I will probably use SNI, and therefore my website visitor needs to tell me the target hostname before I can provide him with the right certificate. In this case, someone sniffing his network can track all the website domains he is accessing. Are there any errors in my assumptions? If not, doesn't this represent a privacy concern, assuming the user is also using encrypted DNS? Footnote: I also realize that a sniffer could do a reverse lookup on the IP address and find out which websites were visited, but the hostname travelling in plaintext through the network cables seems to make keyword based domain blocking easier for censorship authorities.

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• Uninstalled server 2008 now router won't handle DHCP

  - by john

  My set up is this. server behind router, router has a server and switch connected to it with multiple computers. router used to serve DHCP and DNS, a couple of days ago installed AD, DNS and DHCP on the server, and the server gave out IP's. For various reasons we had to uninstall the domain on our server. I removed AD, DHCP and DNS from the roles and set the router back to serving DHCP and DNS. Now I can't get computers on the network. I reset my router back to factory defaults, and if I plug a computer directly into the router I can get a IP address, but all the computers behind the switch can't get an IP address and can't see the router. All my computers say unidentified network, and if I ping the router it says host is unreachable. On the other hand, my wireless devices are just fine and connect no problem. But for desktops, ipconfig /release doesn't release anything and /renew can't find a server to renew on. My router log shows several FIN scans but they are from innocuous websites (google, netgear) and it shows a couple of smurf attacks but they are all from my external IP. Any ideas? the server isn't even connected to the route right now, and all the computers are set for dynamic IP addresses.. I don't know what else to try? Any help?

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• SQL Server Read Locking behavior

  - by Charles Bretana

  When SQL Server Books online says that "Shared (S) locks on a resource are released as soon as the read operation completes, unless the transaction isolation level is set to repeatable read or higher, or a locking hint is used to retain the shared (S) locks for the duration of the transaction." Assuming we're talking about a row-level lock, with no explicit transaction, at default isolation level (Read Committed), what does "read operation" refer to? The reading of a single row of data? The reading of a single 8k IO Page ? or until the the complete Select statement in which the lock was created has finished executing, no matter how many other rows are involved? NOTE: The reason I need to know this is we have a several second read-only select statement generated by a data layer web service, which creates page-level shared read locks, generating a deadlock due to conflicting with row-level exclusive update locks from a replication prcoess that keeps the server updated. The select statement is fairly large, with many sub-selects, and one DBA is proposing that we rewrite it to break it up into multiple smaller statements (shorter running pieces), "to cut down on how long the locks are held". As this assumes that the shared read locks are held till the complete select statement has finished, if that is wrong (if locks are released when the row, or the page is read) then that approach would have no effect whatsoever....

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• Outlook 2007 + Exchange 2010 (Save All Attachments)

  - by RobertPitt

  About 3 weeks back our company upgraded our mail system to Exchange 2010, all went smooth, few issues but nothing major. A few days ago we had a call from a colleague where he was unable to save all attachments, From File > Save As > Save All Attachments. When the email has a single attachment it works perfectly normal, and depending on the file type it allows you to save multiple attachments. But there's a lot of file types that will not work, such as zip, pdf, doc etc, Usually we get a location box open up asking where we would like to drop the attachments, but it does nothing, You click Save All Attachments and nothing happens. After hours of research I have come across mixed results, a lot of people on forums have been explaining that they have recently crossed over to Exchange 2010 and there issues started there. But on the other hand Microsoft released a KB (278188) which was depressing if that, but that article was published in 2007, as stated by the time stamp, and Exchange 2010 has only come out recently. Im looking to see if you guys have any clues what could be causing this, anything server side that I can take a look at (AD, Exchange, ...). Any help on this is greatly supported

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• Users getting 'flooded' with not read notifications (NRNs) for old emails and meeting requests

  - by Exile

  I'm being placed under quite a lot of pressure from senior management over a relatively trivial issue. Basically the vast majority of users are complaining that they receive not read notifications (NRNs) for old emails and meeting requests in large numbers multiple times a day. I know something strange is happening because some are delivered at silly times in the morning (i.e 3AM or 4AM). The problem I have is that these some of these NRNs are from meeting requests and messages that are 120 days old, so some users have deleted the original message so I don’t actually know if the NRN is from an email or meeting request. This is typical of what users receive as a NRN: From: Sender Sent: 23 March 2012 04:16 To: Recepient Subject: Not read: Accepted: Status update Your message To: Sender Subject: Accepted: Status update Sent: Wednesday, November 23, 2011 8:59:00 AM (UTC) Dublin, Edinburgh, Lisbon, London was deleted without being read on Friday, March 23, 2012 4:15:32 AM (UTC) Dublin, Edinburgh, Lisbon, London. ... From: Sender Sent: 18 March 2012 01:13 To: Recepient Subject: Not read: Gold delivery - Sourcing module Your message To: Sender Subject: Gold delivery - Sourcing module Sent: Friday, November 18, 2011 9:37:58 AM (UTC) Dublin, Edinburgh, Lisbon, London was deleted without being read on Sunday, March 18, 2012 1:12:37 AM (UTC) Dublin, Edinburgh, Lisbon, London. I have done a search and found the following: http://support.microsoft.com/kb/2544246 http://support.microsoft.com/kb/2471964 But we already installed 'Update Rollup 6 for Exchange Server 2010 Service Pack 1' back in December, so I am not sure what we can do to fix this?

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• SAFE MODE Restriction in effect. The script not allowed to access directory owned by uid

  - by user57221

  I am running a dedicated server with multiple websites. I have created a global directory for common scripts for all websites, rather than repeating them in every website directory. How can I make this global directory accessible for all website. I am getting following error. Warning: require_once() [function.require-once]: SAFE MODE Restriction in effect. The script whose uid is XXXX is not allowed to access /vhosts/globallibrary/Zend/Application.php owned by uid XXXX I have change the ownership of global directory for X website. so it works fine for X website. latter I added another website Y Now I am getting the same error again. If I change the CHOWN for Y website then X website will have the same error. I don't want to disable the safemode restriction. Is there a work around, so that this global dir will be accessible by all website. I am getting following error in my browser when I try to access global directory. Global directory is on same level as all other websites. Is this a good practice to enable safemode for websites?

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• "The server closed the connection without sending any data"

  - by Toby

  Server setup The problem Diagnostic information What I've tried Specific Help needed 1. I have the following server setup: Debian Squeeze Linux 2.6.32-5-amd64 Apache2-mpm-prefork 2.2.16-6+squeeze10 PHP 5.3.3-7+squeeze14 This server is protected with the Suhosin Patch 0.9.9.1 Max Requests Per Child: 0 - Keep Alive: on - Max Per Connection: 100 Timeouts Connection: 300 - Keep-Alive: 15 Loaded Modules core mod_log_config mod_logio prefork http_core mod_so mod_alias mod_auth_basic mod_auth_digest mod_authn_file mod_authz_default mod_authz_groupfile mod_authz_host mod_authz_user mod_cgi mod_deflate mod_dir mod_env mod_mime mod_negotiation mod_php5 mod_reqtimeout mod_rewrite mod_setenvif mod_ssl mod_status Wordpress 3.4.2 (Upgrading to 3.5 soon :) 2. The problem When I restart the server (sudo shutdown -r now), going to any website page results in the following error from the web browser (in this case, Google Chrome, but other browsers also show the same error). This error can also occur an hour or so after all is working ok, seemingly randomly, which is my biggest concern as it means my server is not reliable: No data received Unable to load the web page because the server sent no data. Here are some suggestions: Reload this web page later. Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data. 3. Diagnostic information The apache error log contains the folowing entries: [Fri Dec 14 22:23:27 2012] [notice] child pid 1955 exit signal Floating point exception (8) [Fri Dec 14 22:23:27 2012] [notice] child pid 1956 exit signal Floating point exception (8) [Fri Dec 14 22:23:29 2012] [notice] child pid 1957 exit signal Floating point exception (8) [Fri Dec 14 22:23:30 2012] [notice] child pid 1958 exit signal Floating point exception (8) [Fri Dec 14 22:23:32 2012] [notice] child pid 1959 exit signal Floating point exception (8) [Fri Dec 14 22:23:32 2012] [notice] child pid 1960 exit signal Floating point exception (8) [Fri Dec 14 22:23:34 2012] [notice] child pid 1961 exit signal Floating point exception (8) [Fri Dec 14 22:23:34 2012] [notice] child pid 1962 exit signal Floating point exception (8) 4. What I've tried a) I can 'fix' the website temporarily by resetting the server twice (resetting it once does not work) using the following commands. NB: the 'reload' option does not work, I have to use restart twice. However, the error can reoccur sometime later. sudo /etc/init.d/apache2 restart sudo /etc/init.d/apache2 restart b) I have tried disabling suhosin by uninstalling php5-suhosin, but a php info page still shows "This server is protected with the Suhosin Patch 0.9.9.1". I have tried putting Suhosin into simulation mode by creating a file /etc/php5/apache2/conf.d/suhosin.ini containing: [suhosin] suhosin.simulation = On The php info page shows the suhosin.ini file in the list of "Additional .ini files parsed" but the php info page still shows "This server is protected with the Suhosin Patch 0.9.9.1" c) Increasing the PHP memory limit In /etc/php5/apache2/ : ; Maximum amount of memory a script may consume (128MB) ; http://php.net/memory-limit memory_limit = 512M d) Disabling all Wordpress plugins, and going back to the default theme. 5. Specific help needed I would very much like help in debugging what is going on here. I am not sure how to determine what processes are in the Apache error log which are exiting "[notice] child pid 1955 exit signal Floating point exception (8)", or what is causing them to exit. And whether suhosin is part of the problem (and how to disable it if it is). Thank you in advance for any advice or tips you can offer in helping me debug this.

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• umask seems to vary by user

  - by paullb

  I've got a development Ubuntu system for which I have several users: myself (with full sudo) and about 5 other users. (I've set up the system so everything in this respect is still at its default setting) I'm trying to set the system up so that multiple people can collaborate in a single directory by using grouing and I want the default permissions to be 664. However when some users edit files the permissions were 644. After a lot of investigating most users have a umask (checked at the prompt) of 0002 and when they create files they are 664 (as expected) but there are 2 (myself and one other) who have 0022 umask (so the files that come out are 644 and nobody else can write to them). I've looked everywhere but can't figure out why a couple users wind up with a different umask e.g. there is nothing the .bash_profile or anything like that) Any ideas for the source of the discrepancy? /etc/bashrc if [ $UID -gt 199 ] && [ "`id -gn`" = "`id -un`" ]; then umask 002 else umask 022 fi /etc/profile if [ $UID -gt 199 ] && [ "`id -gn`" = "`id -un`" ]; then umask 002 else umask 022 fi EDIT: My (bad) ~/.bashrc # .bashrc # Source global definitions if [ -f /etc/bashrc ]; then . /etc/bashrc fi # User specific aliases and functions export LANG=en_US.utf8 Other user (good) .bashrc # .bashrc # Source global definitions if [ -f /etc/bashrc ]; then . /etc/bashrc fi # User specific aliases and functions

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• Easiest way to do host name resolution with IPA?

  - by Luke

  We are currently using static LAN IP addresses for our internal non-public facing servers. We don't have DHCP configured. We're using Vyatta for our router and firewall. The firewall is configured to be zone based. We want to setup IPA for centralized authentication (LDAP+Kerberos). IPA is requiring resolvable host names. I want to avoid having to enter DNS records by hand. What is the most painless way to make host names resolvable that works with IPA in a Linux only environment? We arn't using anything to resolve host names now. Up until now we've been using static ip addresses and local users on each server. We've looked at BIND, DHCP (does that even solve the problem?), and multicast DNS. At this point we're not sure which solution would work best. Is there another option we haven't considered? Security is very important. We have multiple zones where each zone has very specific or no access to another zone. DNS for public domains is forwarded from Vyatta to our ISP's DNS server.

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• Apache, logerror and logrotate: what is the best method?

  - by OlivierDofus

  Hi! Here's a vhost example of my sites: <VirtualHost *:80> DocumentRoot /datas/web/woog ServerName woog.com ServerAlias www.woog.com ErrorLog "|/httpd-2.2.8/bin/rotatelogs /logs/woog/error_log 86400" CustomLog "|/httpd-2.2.8/bin/rotatelogs /logs/woog/access_log 86400" combined DirectoryIndex index.php index.htm <Location /> Allow from All </Location> <Directory /*> Options FollowSymLinks AllowOverride Limit AuthConfig </Directory> </VirtualHost> I've got 12 sites running now. This gives something like: [Shake]:/sources/software/mod_log_rotate# ps x | grep rotate /httpd-2.2.8/bin/rotatelogs /logs/[hidden siteweb]/error_log 86400 /httpd-2.2.8/bin/rotatelogs /logs/[hidden siteweb]/error_log 86400 [snap (as many error_log as virtual hosts)] /httpd-2.2.8/bin/rotatelogs /logs/[hidden siteweb]/access_log 86400 /httpd-2.2.8/bin/rotatelogs /logs/[hidden siteweb]/access_log 86400 [snap (as many access_log as virtual hosts)] grep rotate [Shake]:/sources/software/mod_log_rotate# !!! I've been looking everywhere but I've only found mod_log_rotate. The "little" problem is that the author (very good C developper) explains: "Unfortunately Apache error logs are handled in such a way that we can't work the same log rotation magic on them. Like transfer logs they support piped logging though so you can still use rotatelogs for them. " So my question is: what would be the best way to handle multiple logs? If I just do a very classical log and I use the system's "logrotate" program couldn't this be a good deal? How would/do you deal with that? Thank you!

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• Specify default group and permissions for new files in a certain directory

  - by mislav

  I have a certain directory in which there is a project shared by multiple users. These users use SSH to gain access to this directory and modify/create files. This project should only be writeable to a certain group of users: lets call it "mygroup". During an SSH session, all files/directories created by the current user should by default be owned by group "mygroup" and have group-writeable permissions. I can solve the permissions problem with umask: $ cd project $ umask 002 $ touch test.txt File "test.txt" is now group-writeable, but still belongs to my default group ("mislav", same as my username) and not to "mygroup". I can chgrp recursively to set the desired group, but I wanted to know is there a way to set some group implicitly like umask changes default permissions during a session. This specific directory is a shared git repo with a working copy and I want git checkout and git reset operations to set the correct mask and group for new files created in the working copy. The OS is Ubuntu Linux. Update: a colleague suggests I should look into getfacl/setfacl of POSIX ACL but the solution below combined with umask 002 in the current session is good enough for me and is much more simple.

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