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• Does the from address have to exist when sending an email

  - by Schotime

  Does the from address have to exist when sending an email? Having issues with people receiving my emails when sending from code, and the only thing I can think of that is different is that the from email address does not exist.

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• Linux Best Practices

  - by Zac

  I'm a life-long Windows developer switching over to Linux for the first time, and I'm starting off with Ubuntu to ease the learning curve. My new laptop will primarily be a development machine: 6GB RAM, 320 GB HD. I'd like there to be 2 non-root users: (a) Development, which will always be me, and (b) Guest, for anyone else. I assume the root user is added by default, like System Administrator in Windows. (1) I'd like to mount /home to its own partition, but how does this work if I have two user accounts (Development and Guest)? Are there 2 separate /home directories, or do they get shared? Is it possible to allocate more space for Development and only a tiny bit of space for Guest in GRUB2? How?!?! (2) I'm assuming that its okay that all of my development tools (Eclipse & plugins, SVN, JUnit, ant, etc.) and Java will end up getting installed in non-/home directories such as /usr and /opt, but that my Eclipse/SVN workspace will live under my /home directory on a separate partition... any problems, issues, concerns with that? (3) As far as partitioning schemes, nothing too complicated, but not plain Jane either: Boot Partition, 512 MB, in case I want to install other OSes Ubuntu & non-/home file system, 187.5 GB Swap Partition, 12 GB = RAM x 2 /home Partition, 120 GB I don't have any bulky media data (I don't have music or video libraries, this is a lean and mean dev machine) so having 320 GB is like winning the lottery and not knowing what to do with all this space. I figured I'd give a little extra space to the OS/FS partition since I'll be running JEE containers locally and doing a lot of file IO, logging and other memory-instensive operations. Any issues, problems, concerns, suggestions? (4) I was thinking about using ext4; seems to have good filestamping without any space ceiling for me to hit. Any other suggestions for a dev machine? (5) I read somewhere that you need to be careful when you install software as the root user, but I can't remember why. What general caveats do I need to be aware of when doing things (installing packages, making system configurations, etc.) as root vs "Development" user? Thanks!

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• why are only 4 of 6 cores visable to ESX?

  - by Arthur Ulfeldt

  I'm trying to determine if this is a hardware problem or a software issue so I thought I would ask the serverfault community if there are any known issues with ESX-4 not recognizing more than 4 cores per socket?

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• What should I do about this user?

  - by Tim Brigham

  What should I do about this user? The user is: Downloading pornography Attempting unauthorized access Running hacking software Sending unsolicited email Installing software / tampering with the system etc This is intended as a generic answer for employee behavioral problems, a la Can you help me with my software licensing question? I could see where acceptable use issues are a touch out of scope for SF, however it is one of those things most sysadmins will run into. I don't want to keep rewriting similar answers.

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• CRC error when extracting to SSD from 2nd HDD

  - by gbn

  Hello I have a large RAR file (split up) containing an ISO on my 2nd HDD When I extract it: to the same HDD, it's OK to the system/OS SSD, I get CRC errors I've checked memory, run memtests, checked wires etc I have no other issues; only with this one RAR file Any ideas please?

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• Should I change the process priority of Apache Tomcat in Windows?

  - by joe

  I have a web app running on tomcat/Windows that is experiencing performance issues. Will setting the process priority help or will this interfere with my system stability. Thanks.

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• Messenger for voice calls

  - by Rogue

  I have been using Skype for a very long time, but lately I have been facing a lot of issues with the voice clarity. What messenger or VOIP clients that you know out of experience that are better than Skype for voice communication ?

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• Enable TRIM on FreeBSD 9 Install

  - by javanix

  I recently upgraded all of the parts in my FreeBSD 9 server. I purchased an SSD to run as a the root drive - I'd like to enable TRIM on it but the only documentation I can find on it is that it can be enabled using newfs or tunefs. Is there a way to specify flags to newfs during the installation process, and if not, am I going to run into TRIM-related issues if I run tunefs after installation is complete?

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• Power Supply And Power Cable at Equinix Palo Alto?

  - by d123

  I will be doing a server installation at the Palo Alto Equinix Data Center soon and I'm coming in from overseas so I wondering if any of you can help me out regarding power supply can power cable issues. My server power supply is INPUT 100-240V AC ~50/60Hz MAX AC CURRENT 10A-5A Do I need a DC power supply? and the power cable plug head I'm currently using is BS 1363 plug head. What kind of head do I need?

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• On-call EC2 System Administrator

  - by Ball

  Is there a company that can respond to critical alerts for our EC2-based web application? Does such a service exist? If not, is there a place where we can find individuals who are willing to do 5-10 hrs of work a month responding to issues? Thanks. I know this is not a technical question, but I know it's a useful question for many companies and I'm not sure where else to ask.

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• ADFS 2.0 Server Prompts For Credentials When Using FQDN

  - by ncaudill

  We have an ADFS test enviroment set up, but we are running into issues with login prompts. If we browse to ADFS from Domain A we get a token sucessfully from ADFS, however when we browse from Domain B we are getting prompted for credentials. Domain A trusts Domain B but Domain B does not trust Domain A. The weird thing is, if we replace the full domain name with the server's IP address we can sucessfully get through from both domains. I feel like this should be a really simple solution, but we're stumped.

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• SFTP logging: is there a way?

  - by Darryl Hein

  I'm wondering if there is a way to log commands received by the server. It can be all SSH commands, as long as it includes information on commands related to file transfer. I'm having issues with an SFTP client and the creator is asking for logs, but I am unable to find any existing logs. I'm looking to log on both or either CentOS or OS X (although I suspect if it's possible, it'd be similar on both).

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• What at the Best Practices and tools for managing Windows Desktops from a linux sever ?

  - by JJ

  I know this is a loaded question! What are the best ways to manage Windows (2000, XP, Vista, Win7) workstation from a centralized linux server. I would like to replace the fuctionaility of MS SBS Server with a linux box. The following issues would need to be addressed. File Sharing Authentication, Authorization, and Access Control Software Installation Centralized Login Script Centralized Backup

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• Windows 7 Computer Management Not Accessible

  - by David

  I am having issues trying to access Computer Management from the start menu. The following is a screenshot of exactly how I want to go to computer management. I know that there are other ways to get to computer management, but I would like to go the easier way through the start menu. I tried restarting the computer and I tried patching the computer. No error message comes up or anything. There is no response from the computer.

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• Where can I request a new enhancement for Google Chrome?

  - by Oscar Reyes

  I have a request for enhancement for Google Chrome, but don't know where to place it. I checked http://code.google.com/p/chromium/issues/list but it seems to be only for bugs. I use the spelling check quite often, but I need to swap between english and spanish all the time according to the website. Since chrome can detect the webpage language, it would be great to have the spell check set to that language by default.

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• Will installing the CCCP make any difference in MKV handling in Win7/WMP12?

  - by Dr Haisook

  I've found that MKV files play just fine on WMP12 (Win 7 64-bit). However, no thumbnails for such files are there and in the information panel at the bottom, no information about the length of the video is shown. I wonder if installing CCCP would fix these 2 issues and/or improve the playability of MKV even further. Or do I not need that pack? What do you think?

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• grep not functioning correctly

  - by ak0

  I've been happily using grep for many years without any issues, but since today it quit working. During the past hour I tried this and that, but enough is enough, I'm posting the bastard here: On the simplest command like grep 'aaa' file.txt I'm getting this: grep: aaa: No such file or directory So grep does not interpret the first argument as the pattern as it should, but treats it as a path. Please help me, I'm going crazy '-(

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• Delete set of files using find command

  - by Dave Jarvis

  Background Delete a set of files, scattered across different directories. Problem The following code does not work (the unescaped | causes issues); for %i in (dir /s/b | find "lock") do echo del %i Question Without writing a batch file, how would you delete all files named "lock" (i.e., found using the find command) within the current directory and all subdirectories (including hidden directories)? Thank you!

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• PuTTY - Server Unexpectedly Closed Network Connection

  - by Austin

  I have two servers that I have been able to connect fine as s1.website.com and s2.website.com I connected to s1.website.com earlier today without any issues, however, when I connected to s2.website.com it gave me the "Server Unexpectedly Closed Network Connection" I have researched this elsewhere and someone concluded it to a "brute force attempt" However, I know this is not the case. If anyone else has had this issue please let me know. Thanks

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• Proxied access for chinese users?

  - by Eaton

  I'm working on a web app that will have a large-ish chunk of users in China. The bad news is that most of them are university students, and access has been blocked. Setting up a proxy server inside China seems like the best (potential?) solution, but it's the first time I'll have done anything along those lines. Are there any pitfalls or issues that I should be aware of before I start down this path?

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• How can I connect directly to a mobile device over 3G?

  - by manwood

  I'd like to be able to deploy a lightweight web server on my mobile device (android) but there are obviously NAT issues with respect to the mobile provider's network. Is there anyway I can make my device publicly available/addressable over the internet?

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• How to use AD/GPO/Print Services to "push out" a new printer driver to replace a broken one? How did my server get a broken driver?

  - by Zac B

  Context: We have an AD/GPO-managed corporate network with a little over a hundred PCs running Windows 7 x64, and a few managed printers. Our Server2008R2 primary domain controller is configured as a print server for them all. Problem: After a recent windows update and restart (no printer driver updates were included) on the DC, a particular shared printer (Lexmark T650) has begin exhibiting some strange behavior. First, it prints a preceding and following blank page for almost every document, on jobs submitted by about half of client machines (no separator page is configured on the server or any of the clients I've seen). Second, whenever someone tries to access "Printing Preferences" on any client, they recieve the following error message (this happens everywhere, 100% of the time, and didn't happen before the update on the DC): Once they click "OK", the prefs screen appears (with no separator page selected) and everything seems fine. I'm not even sure if these two issues are related, but everyone seems affected by one or both of those issues. What I've Tried: I've been hesitant to un-deploy the problem printer, or remove it via GPO, as it's pretty heavily used. I've tried updating (via MS update and our internal WSUS server) client machines and the DC. No printer driver updates have appeared, and no number of updates or restarts on the server or the client seems to have achieved anything other than my boss getting grumpy that I'm bouncing the domain controller so often. I've tried deleting the drivers on the server, and re-installing them from the original source that has worked for the past year...no change. I've tried selecting "New Driver" for one of the shared printers on a client machine, running as domain admin, and pushed the latest driver found by MSupdate back up to the DC. This changed the version number of the driver recorded in the print server manager, but caused no change--on the client I pushed from, or on any other. The error still appears. Question: Why the heck is this happening? Obviously, I got a bad driver from somewhere, but how do I get rid of it? I don't know of any "roll back drivers" functionality for centrally managed print drivers like Windows offers for other devices. How would I a) get this issue resolved on a client, and b) push the fix to the other members of the domain?

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• Limit NFS block size from server side?

  - by paulw1128

  Is it possible to enforce a maximum rsize/wsize in nfsd? I'm having issues related to IP fragmentation (yes, I'm stuck with NFS-over-UDP, contrary to the warnings in the manpage), and have no practical access to the client mount command (buried in one of many TFTP boot images). http://nfs.sourceforge.net/nfs-howto/ar01s05.html lists a kernel source parameter limiting the maximum block size, but I'm not gong to get away with recompiling the nfsd kernel module so that's not really an option either :-(

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• How can I deploy Windows Server 2003 with the latest service packs across my forest?

  - by James

  I have a number of servers running different NOS and I would like to get them all running the same standard platform. I have chosen Windows Server 2003 as I have some spare licences for it and it seems mature enough now. I have had issues with Windows Server 2008. Is there a way to get an installation that will have all the latest service packs and updates on it ready to install so I don't have to download updates again for each server?

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• my HP desktop with Windows Vista wont boot

  - by John

  It continues to loop to a BSOD and I cant get a dos prompt or repair screen, I dont have recovery disks but I have brought up a window, black, with gray title bar that is labeled Edit Boot Options, below that it has Edit Windows boot options for: Windows Vista (TM) Home Premium Path: \WINDOWS\system32\winload.exe Partition:1 Hard Disk: 1549f232 and then it has a place to enter something starting with one of these [ and one or two lines down it has ] what do i enter in this space and is there something i can enter that would help solve my boot up issues

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