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• Advance DNS - Redirecting Emails to new webhost

  - by Martin

  I am not to sure if this question belongs here but I will surely find out soon enough. I have two web hosts (Not sure why it has been setup this way but it has). I do not want to use the original web host to handle the emails as the Data that we get from them is 500 mb which is already full with hosting the website. The second web host has an unlimited data plan and was created so we could use this host for the email accounts. Now the problem is I have reset the Advance DNS Zone records on both accounts and I am not sure what they were before. (Silly me should have taken a backup of how it was setup before hand I know) Emails were working before and going to the second hosts server now they are going to the first host but it has no email addresses setup for use so all emails are bouncing saying that the address does not exist. Host 1 IP: 192.185.96.110 Host 2 IP: 27.54.88.66 So far I have changed the Advanced DNS Zone record on Host 1 with the following: A Record: mail.australisinstitute.qld.edu.au - 27.54.88.66 I have not made any changes on Host 2 and both hosts have the default MX Records. If I need to provide any more information I can but I just hope someone can decipher what I have said haha. Cheers in advance!

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• Sql Server 2005 database lost, How to recover all records. MDF/LDF size is same as it should be

  - by Shantanu Gupta

  Few months back, I installed a sql server 2005 on one of my client machine. I gave him a backup option to take backup timely but he never took any backup. Today he called me that "i m not able to see any record of mine." I visited at my clients system and saw that none of the record was present on the tables. There was not even a single row in any of the tables. Then I checked if he has any backup file which i found to be absent. I asked him the reason what could be the possible cause. He said it might be due to virus. After this I checked the size of mdf and ldf file and found it should be what it is. when i created his server mdf ldf file had 2MB of database now it is 83 MB and 193Mb mdf/ldf respectively. This shows the data is still present in it but it is not being displayed. What could be the possible cause and how can i restore all data back to my tables ?

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• Plesk wildcard subdomain not working

  - by avdgaag

  I'm trying to set up a wildcard subdomain on my VPS. Ultimately I want to end up with this: main site: my.domain.tld subdomain: sub1.my.domain.tld - should end up serving my.domain.tld/sub1 I am using plesk 8.6. I have created a DNS A record pointing at my VPS' IP. I have then restarted the DNS server and waited up to 24 hours. But trying ping sub1.my.domain.tld results in an unknown host error. So I know there's more stuff involved, configuring apache etc. But so far, I cannot even get the subdomain working at all, let alone serve up the right content. I have also tried a CNAME record, to no effect. I have also tried creating a regular subdomain with a fixed name, which also does not work. Pre-configured subdomains DO work, like ftp.my.domain.tld or mail.my.domain.tld. I am clearly missing something here, but my hosting provider charges a small fortune for any support request not involving hardware physically burning down, so I'm hesitant to ask them. Any ideas?

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• Bluehost Emails Getting Blocked

  - by colithium

  A site for my client has the run-of-the-mill "website with users" email pattern. Create an account, get an activation email. Get an email when a subscription is expiring, etc. The site is hosted on Bluehost and currently it uses php's mail() function. There isn't much configuration that is allowed (as far as I know). The trouble is, about a third of these emails disappear into the void. They aren't in spam or junk folders, there's no bounce message, they just cease to exist. I've read about Bluehost email troubles but I can't figure out what my options are for fixing it. These aren't marketing emails, ie they have user-specific information contained within them. I suppose if a solution offers a good templating system that would be fine. What are my options? Excerpt of headers when delivered to a Gmail address: Received-SPF: neutral (google.com: 00.000.000.000 is neither permitted nor denied by best guess record for domain of domain@box###.bluehost.com) client-ip=00.000.000.000; DomainKey-Status: good Authentication-Results: mx.google.com; spf=neutral (google.com: 00.000.000.000 is neither permitted nor denied by best guess record for domain of domain@box###.bluehost.com) smtp.mail=domain@box###.bluehost.com; domainkeys=pass [email protected]

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• TV won't go into standby

  - by Robert

  When I select Start-Turn off computer-Standby the 'turn off computer' option window closes, and then nothing else happens. I can start new applications, and Windows acts like I never selected standby. I ran it for several hours after that. If I have a TV program scheduled to record when I select standby I get a window (the Pinnacle TV software) asking if I'm sure, there are programs scheduled to record - and the computer just keeps running after I select yes, never going into standby. I added that detail as it shows the standby process is starting. [This problem also happens if a TV program is not scheduled, so the scheduler task in not running/in memory. This problem happens regardless of whether I'm not watching TV. This problem happens regardless of whether Media Center is running (it usually isn't, I'm using Pinnacle to watch TV).] I looked at "How to troubleshoot hibernation and standby issues in Windows XP" http://support.microsoft.com/kb/907477 - ACPI is enabled, and "standby" is an option in "Power Options Properties." So it appears to be setup correctly. Windows XP SP3 Media Center Edition, all current updates installed.

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• Backup solution, or, how Duplicati duped me

  - by blarghmaster

  TL/DR version: Mono + Duplicati.commandline.exe restore etc. etc. spits this out for several files regardless of what I try. I am able to list sets, list files in said sets, even do a verify, but each time i do a restore of any kind, i get errors to the effect of : Failed to restore file: "snapshot/blahblah/2005-11-07.tar.gz", Error message: The partial file record for snapshot/blahblah/2005-11-07.tar.gz does not match the file Any advice here, or an idea of where to look for a better solution? FULL STORY: Ive recently put together an nice clean, friendly backup solution for several servers, predominantly Linux, but occasionally a windows box is added too. The solution as is meets all my requirements and does it well... save 1: cross-compatibility The solution is based on a combination of several elements, but eventually comes done to using Duplicity and Duplicati for the actual storage of files. The entire solution was ready to go before i realized that Duplicati, does not, in fact allow me to restore my files to a Linux box, regardless of what the commandline under Mono might tell you. It just spits out errors on random zip and image files, for apparently no good reason as i have tried several options to get it to restore, and several versions of Mono including installing it pretty much lib-for-lib. There is no effective log file for the reasons for these errors, and even the "--debug-output=true" flag does nothing. I am able to list sets, list files in said sets, even do a verify, but each time i do a restore of any kind, i get errors to the effect of : Failed to restore file: "snapshot/blahblah/2005-11-07.tar.gz", Error message: The partial file record for snapshot/blahblah/2005-11-07.tar.gz does not match the file Now i could most likely use the friendly instructions on Duplicati's site and script a bash equivalent of the restore, but that's not exactly ideal. Any advice on this? or possibly an alternative solution that presents the same benefits of Duplicati/Duplicity but that actually works across platforms?

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• Computer won't go into standby

  - by Robert

  When I select Start-Turn off computer-Standby the 'turn off computer' option window closes, and then nothing else happens. I can start new applications, and Windows acts like I never selected standby. I ran it for several hours after that. If I have a TV program scheduled to record when I select standby I get a window (the Pinnacle TV software) asking if I'm sure, there are programs scheduled to record - and the computer just keeps running after I select yes, never going into standby. I added that detail as it shows the standby process is starting. [This problem also happens if a TV program is not scheduled, so the scheduler task in not running/in memory. This problem happens regardless of whether I'm not watching TV. This problem happens regardless of whether Media Center is running (it usually isn't, I'm using Pinnacle to watch TV).] I looked at "How to troubleshoot hibernation and standby issues in Windows XP" http://support.microsoft.com/kb/907477 - ACPI is enabled, and "standby" is an option in "Power Options Properties." So it appears to be setup correctly. Windows XP SP3 Media Center Edition, all current updates installed.

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• AD domain on web servers behind NAT - DNS issues?

  - by Ant

  I'm trying to setup an AD domain to manage the security between two Windows Server 2008 webservers that will sooner or later use NLB to balance website requests. I've hit a problem which I think is a simple solution and is down to DNS. My website domain is mydomain.com. The two servers are running behind a NAT firewall on the 10.0.0.0 IP range. I've setup the AD domain to be called ad.mydomain.com (as recommended by MS and a few other answers to questions on here). The second web server however doesn't want to join the domain, and gives an error pinning the problem on DNS - "ensure that the domain name is typed correctly" even though it queries the SRV record successfully and gets the correct DC back - dc.ad.mydomain.com. Doing a dcdiag /test:dns on the DC gives the Delegation error 'DNS Server dc.mydomain.com Missing glue A record'. I have a feeling I need to add something to the public DNS so that it in some way knows about ad.mydomain.com. Can anyone suggest whether I'm on the right track in adding something to the public DNS? Or whether it's something else? Many thanks

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• Creating Active Directory on an EC2 box

  - by Chiggins

  So I have Active Directory set up on a Windows Server 2008 Amazon EC2 server. Its set up correctly I think, I never got any errors with it. Just to test that I got it all set up correctly, I have a Windows 7 Professional virtual machine set up on my network to join to AD. I set the VM to use the Active Directory box as its DNS server. I type in my domain to join it, but I get the following error: DNS was successfully queried for the service location (SRV) resource record used to locate a domain controller for domain "ad.win.chigs.me": The query was for the SRV record for _ldap._tcp.dc._msdcs.ad.win.chigs.me The following domain controllers were identified by the query: ip-0af92ac4.ad.win.chigs.me However no domain controllers could be contacted. Common causes of this error include: - Host (A) or (AAAA) records that map the names of the domain controllers to their IP addresses are missing or contain incorrect addresses. - Domain controllers registered in DNS are not connected to the network or are not running. It seems that I can talk to Active Directory, but when I'm trying to contact the Domain Controller, its giving a private IP to connect to, at least thats what I can make out of it. Here are some nslookup results. > win.chigs.me Server: ec2-184-73-35-150.compute-1.amazonaws.com Address: 184.73.35.150 Non-authoritative answer: Name: ec2-184-73-35-150.compute-1.amazonaws.com Address: 10.249.42.196 Aliases: win.chigs.me > ad.win.chigs.me Server: ec2-184-73-35-150.compute-1.amazonaws.com Address: 184.73.35.150 Name: ad.win.chigs.me Address: 10.249.42.196 win.chigs.me and ad.win.chigs.me are CNAME's pointing to my EC2 box. Any idea what I need to do so that I can join my virtual machine to the EC2 Active Directory set up I have? Thanks!

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• Which is the fastest way to move 1Petabyte from one storage to a new one?

  - by marc.riera

  First of all, thanks for reading, and sorry for asking something related to my job. I understand that this is something that I should solve by myself but as you will see its something a bit difficult. A small description: Now Storage = 1PB using DDN S2A9900 storage for the OSTs, 4 OSS , 10 GigE network. (lustre 1.6) 100 compute nodes with 2x Infiniband 1 infiniband switch with 36 ports After Storage = Previous storage + another 1PB using DDN S2A 990 or LSI E5400 (still to decide) (lustre 2.0) 8 OSS , 10GigE network 100 compute nodes with 2x Infiniband Previous experience: transfered 120 TB in less than 3 days using following command: tar -C /old --record-size 2048 -b 2048 -cf - dir | tar -C /new --record-size 2048 -b 2048 -xvf - 2>&1 | tee /tmp/dir.log So , big problem here, using big mathematical equations I conclude that we are going to need 1 month to transfer the data from one side to the new one. During this time the researchers will need to step back, and I'm personally not happy with this. I'm telling you that we have infiniband connections because I think that may be there is a chance to use it to transfer the data using 18 compute nodes (18 * 2 IB = 36 ports) to transfer the data from one storage to the other. I'm trying to figure out if the IB switch will handle all the traffic but in case it just burn up will go faster than using 10GigE. Also, having lustre 1.6 and 2.0 agents on same server works quite well, with this there is no need to go by 1.8 to upgrade the metadata servers with two steps. Any ideas? Many thanks Note 1: Zoredache, we can divide it in two blocks (A)600Tb and (B)400Tb. The idea is to move (A) to new storage which is lustre2.0 formated, then format where (A) was with lustre2.0 and move (B) to this lustre2.0 block and extend with the space where (B) was. This way we will end with (A) and (B) on separate filesystems, with 1PB each.

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• Autohotkey script multiple functions

  - by Vince

  Is it possible to use this bottom script but add a second hotkey and function that goes with it. ;DoOver.ini ;[Settings] ;record={LCtrl}{F12} ;hotkey to start and stop recording ;playback={LCtrl}{F5} ;hotkey to start playback ;keydelay=10 ;ms to wait after sending a keypress ;windelay=100 ;ms to wait after activating a window ;movemouseafter=1 ;move the mouse to original pos after playback 1=yes 0=no [Settings] record={LCtrl}{F12} playback={LCtrl}{F5} keydelay=10 windelay=100 movemouseafter=1 macro={WinActive}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{LCTRL Down}{Right}{Right}{LCTRL Up}{LSHIFT Down}{End}{LSHIFT Up}{LCTRL Down}{c}{LCTRL Up}{MouseClick,L,236,116,1,0,D}{MouseClick,L,54,116,1,0,U}{LCTRL Down}{LCTRL Up}{MouseClick,L,474,64,1,0,D}{MouseClick,L,474,64,1,0,U}{MouseClick,L,451,77,1,0,D}{MouseClick,L,451,77,1,0,U}{MouseClick,L,44,225,1,0,D}{MouseClick,L,44,225,1,0,U} OR playback={LCtrl}{F7} keydelay=10 windelay=100 movemouseafter=1 macro={WinActive}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{Down}{LCTRL Down}{Right}{Right}{LCTRL Up}{LSHIFT Down}{End}{LSHIFT Up}{LCTRL Down}{c}{LCTRL Up}{MouseClick,L,236,116,1,0,D}{MouseClick,L,54,116,1,0,U}{LCTRL Down}{LCTRL Up}{MouseClick,L,474,64,1,0,D}{MouseClick,L,474,64,1,0,U}{MouseClick,L,451,77,1,0,D}{MouseClick,L,451,77,1,0,U}{MouseClick,L,44,225,1,0,D}{MouseClick,L,44,225,1,0,U} Maybe add something like what is printed in bold here. I know the coding isnt right here, but i think this is the best way to describe what I am looking for. Anybody?

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• Sporadic email delivery to one user

  - by minamhere

  I have a user that occasionally does not receive emails from outside our organization. It does not seem to matter whether the other person is replying to an initial email or sending a new message. I have checked the Exchange System Manager and there is no record of the sender at all during this time period. No record of the message getting captured by the spam software (GFI Mail Essentials). The sender does not receive an NDR or any other indication that the message didn't arrive. It seems to me that these messages are not even getting to our servers at all. But, this is only impacting one user(that I am aware of) and not all the time. Some messages get through without any problem, others just disappear. The senders are not related at all. One is in another country, one uses AOL, one uses a corporate Exchange server locally. I can't seem to find a pattern. Where else can I look to try to figure out where these messages are going/getting captured? Are there additional logs that I can enable either within GFI or Exchange that might shed some light on this? Thanks. We are using Exchange 2003 on Server 2003. Desktop client is Outlook 2003 on Windows XP Pro.

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• DKIM- Filter No Signature Data

  - by Vineet Sharma

  I have installed DKIM-Filter on Postfix after reading this tutorial http://www.unibia.com/unibianet/systems-networking/how-setup-domainkeys-identified-mail-dkim-postfix-and-ubuntu-server My email now has a DKIM signature but still it is landing in the SPAM folder. Here is the header Received-SPF: neutral (google.com: 69.164.193.167 is neither permitted nor denied by best guess record for domain of [email protected]) client-ip=69.164.193.167; Authentication-Results: mx.google.com; spf=neutral (google.com: 69.164.193.167 is neither permitted nor denied by best guess record for domain of [email protected]) [email protected]; dkim=hardfail (test mode) [email protected] Received: from promote.a2labs.in (localhost [127.0.0.1]) by promote.a2labs.in (Postfix) with ESMTPA id 34858530E8 for <[email protected]>; Mon, 28 Feb 2011 12:23:07 +0530 (IST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=a2labs.in; s=mail; t=1298875987; bh=bo+H1VYPIHMja2u7i1lnzr4k/j4Pe8iSf79bVw94XpI=; h=To:Subject:Message-ID:Date:From:Reply-To:MIME-Version: Content-Type:Content-Transfer-Encoding; b=nhTdlnUwo0iUJ92ycQzKSRjw 5Pfya0DJcJrAc8Mr2hIv8OLpgzBCzdOMWTGqR5nuUmAzgCGYBhYAM2XZwVxo9JG/iz7 oYKysmNQnskFx0TRyW3UOkDWcfHcPnCL6Y7fGzZWinmsyjsg47k+mKZg/e8jqlwTAMO PYKkt5pBz7SM0= Also my mail.err file shows Feb 28 12:17:03 ivineet dkim-filter[32181]: 1F788530E1: no signature data Feb 28 12:18:02 ivineet dkim-filter[32181]: 432BA530E2: no signature data How to fix it

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• Why is my Drupal Registration email considered spam by gmail? (headers included)

  - by Jasper

  I just created a Drupal website on a uni.cc subdomain that is brand-new also (it has barely had the 24 hours to propagate). However, when signing up for a test account, the confirmation email was marked as spam by gmail. Below are the headers of the email, which may provide some clues. Delivered-To: *my_email*@gmail.com Received: by 10.213.20.84 with SMTP id e20cs81420ebb; Mon, 19 Apr 2010 08:07:33 -0700 (PDT) Received: by 10.115.65.19 with SMTP id s19mr3930949wak.203.1271689651710; Mon, 19 Apr 2010 08:07:31 -0700 (PDT) Return-Path: <[email protected]> Received: from bat.unixbsd.info (bat.unixbsd.info [208.87.242.79]) by mx.google.com with ESMTP id 12si14637941iwn.9.2010.04.19.08.07.31; Mon, 19 Apr 2010 08:07:31 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of [email protected] designates 208.87.242.79 as permitted sender) client-ip=208.87.242.79; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of [email protected] designates 208.87.242.79 as permitted sender) [email protected] Received: from nobody by bat.unixbsd.info with local (Exim 4.69) (envelope-from <[email protected]>) id 1O3sZP-0004mH-Ra for *my_email*@gmail.com; Mon, 19 Apr 2010 08:07:32 -0700 To: *my_email*@gmail.com Subject: Account details for Test at YuGiOh Rebirth MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed; delsp=yes Content-Transfer-Encoding: 8Bit X-Mailer: Drupal Errors-To: info -A T- yugiohrebirth.uni.cc From: info -A T- yugiohrebirth.uni.cc Message-Id: <[email protected]> Date: Mon, 19 Apr 2010 08:07:31 -0700 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bat.unixbsd.info X-AntiAbuse: Original Domain - gmail.com X-AntiAbuse: Originator/Caller UID/GID - [99 500] / [47 12] X-AntiAbuse: Sender Address Domain - bat.unixbsd.info X-Source: X-Source-Args: /usr/local/apache/bin/httpd -DSSL X-Source-Dir: gmh.ugtech.net:/public_html/YuGiOhRebirth

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• FWBuilder DNS Object Run Time - when exactly does it resolve the DNS name?

  - by Jakobud

  In Firewall Builder, when you use the DNS Object and set it to run time, when exactly does the firewall (iptables in our case) actually resolve the DNS name? Is it whenever a call is made to that DNS name in the firewall? So the firewall would resolve the name on the fly whenever someone/something tries to access that DNS name? Or is it when you execute the fw script to load the rules into iptables? So in this case, it would resolve the DNS name that one time and then hard-code the resulting ip address into the iptable rules? From what I read, I think its #1, but it's just not 100% clear to me. We have two servers for a certain function on our network. One is the primary server and one is backup. alpha0.domain.com alpha1.domain.com In DNS we have this: alpha.domain.com -> alpha0.domain.com If the primary server goes down and we need to switch to the backup, I just change our local DNS record to point to alpha1.domain.com instead. So back to the firewall, if I just put in a Domain Object as alpha.domain.com, do I have to reload the firewall rules every time we switch to the backup alpha server and change the DNS record? Or will the firewall automatically resolve to the correct address even after the switch?

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• SMTP server closes connection unexpectedly

  - by janin

  I'm writing a python program to send emails, and when trying to send to yopmail, hotmail and some other hosts the connection gets closed by the server without a message. I tried connecting directly with netcat and the same thing happens. Here's what the exchange looks like : $ nc smtp.yopmail.com 25 220 mx.yopmail.com ESMTP *** ehlo mx.myhost.com 250 SIZE 2048000 mail FROM:<[email protected]> 250 OK rcpt TO:<[email protected]> The connection is just closed abruptly at this point. On other hosts, like my ISP's, everything goes fine. I've checked the blacklists but my IP is not listed. Any idea what's going on? Edit: My IP is not listed in any blacklist. I own myhost.com, but I don't have an SPF record. I'll add one and update this post when the record has propagated. Edit 2: with the SPF added the email is now accepted and Hotmail adds a Authentication-Results: hotmail.com; sender-id=pass header to the email. However it gets classified as spam, but I guess that's another matter. Thanks for your help.

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• Issues using gmail with google apps and external domain

  - by Jonathan Kelly

  I have recently tried to use gmail through google apps as my main email client, but I'm experiencing a few different problems. I am managing the domain (conjunktiondesign.co.uk) through 123reg.co.uk but it is hosted through fasthosts.co.uk. I transfered the domain to 123reg as fasthosts did not allow me to change the MX records myself. I followed the setup instructions step by step on google apps and changed the MX records as they told me to. My email was now working perfectly but my website was down and I was getting the following error: The dnsserver returned: No DNS records I have a friend that is using the same system as me (ie. Externally hosted domain and google apps mail) and I changed my 123reg details to the same that he had (as his was working perfectly - both email and website). I changed my name servers to point to fasthosts, rather than 123reg and I added an A record called '@' pointing to fasthosts IP address. I also created another A record called 'www' pointing to fasthosts IP address. After I did this, my website worked almost immediately but I have only realised that since changing it my email is now down. I have not received anything since Saturday. I am a web designer and would consider myself fairly tech savvy, but I have no idea about A records, CNAME's and all the things I have been messing about with! What I ultimately need is someone to help me get my email and website working at the same time, rather than one being down when the other is OK. I seem only able to get one or the other working. I have now changed the name servers back to 123reg in an attempt to get my email back as it is more important than my website at this stage. Any help is much appreciated. Thanks.

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• Why do HTTP loopback connections not work on my subdomains?

  - by memeLab

  I have a shared hosting account at Jumba running Linux kernel 2.6.9-103.ELsmp (don't know if that helps) with cpanel 1.0 (RC1). I am using the WordPress plugin Backup Buddy, which requires HTTP loopback connections to monitor / complete backups. This works fine on memelab.com.au, but doesn't work at any subdomain (e.g.: staging.memelab.com.au). Is it possible to setup an A record or some such to remedy this? I'm aware of a workaround, (setting WP_ALTERNATE_CRON) but I find this unsatisfactory due to the messy URLs. BackupBuddy:_Frequent_Support_Issues#HTTP_Loopback_Connections_Disabled Here is the reply from my host: …as main domain have it's own separate DNS entry it have localhost entry which helps for looback connections where as subdomains don't have separate DNS zone, so it is not possible to create looback connections for it. I have cpanel access to the 'advanced zone editor' - is there anything tricky I can do there? maybe 127.0.0.2? (I remember reading that there were at least 8 available local IPs available on (some) Linuxes.) All the A records point to the server IP, with the exception of localhost.memelab.com.au which points to 127.0.0.1. I've just tried entering a new A record: localhost.itours.memelab.com.au pointing to 127.0.0.2. I still get the warning in Backup Buddy that loopback is not active, and Cpanel won't let me enter 127.0.0.1 (guess it doesn't work like that!) nslookup itours.memelab.com.au Server: 203.88.112.33 Address: 203.88.112.33#53 Non-authoritative answer: Name: itours.memelab.com.au Address: 117.55.224.177

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• Windows Server 2008 - inexplicable system time jumps/glitches/inaccuracies

  - by Nathan Ridley

  I'm running a production web server on Windows Server 2008. On this server I have a database which logs certain user actions, but every now and again I inexplicably get database entries which, according to the record ID and the records immediately before and after, have the wrong time logged against them (7 days+ too old). For example, record ID 1001 will be for Dec 7, 11pm, 1002 will be for Dec 7, 11:01pm, then 1003 will be for Nov 28, 1:38am, then the next will be back on track again. The problem seems to occur in random records (or 2-3 records in a row) and crops up once every few days. This is absolutely baffling because there is only one place in the application that assigns this date/time value and it's simply the system UTC date. I have been synchronizing the system time to time-a.nist.gov (which I read in another article was a bit more reliable than the default time.windows.com) and it seems to occasionally get out of time anyway (3-4 minutes), but I'm speculating that occasionally the time server has a temporary glitch where the date changes to a drastically wrong value for a short space of time, then changes back. Either that, or the motherboard clock battery is screwed and the reason the time momentarily changes is that the motherboard loses the time and then the time synchronization puts it back again. Could either of my suspicions be right? Should I turn off time synchronization for a production server? Assigning dates to an event log where the dates are up to 2 weeks prior to the actual date is a severe problem I can't have when the next version of my application is released. Any suggestions or advice would be appreciated.

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• Sending bulkmail from different server?

  - by Omer Gencay

  I want to send bulk domains from my vps for a domain(cagetur.com) hosted in another company. The company(cagetur) will go on using the old hosting account for its mailing operations. The vps will just be used for smtp for once a week. I created an A record "vps.cagetur.com". directed it to the IP adress of vps then created a mx record with bigger preference number "50 vps.cagetur.com." on the domain control panel. When I trace the "vps.cagetur.com" i can reach my vps now. I installed hMail on the vps. Configure it (created domain, accounts). I have no information about "system" so i couldn't get further from this point. I can connect to the mail server with Outlook without errors. I can send an email from the account on the vps but it doesn't reaches. No errors, no emails. What do i have to do for getting it work? Thank you.

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• Reduce "Metafile" memory usage?

  - by Jay Conrod

  My work computer (Windows 7 64-bit) spends a lot of time swapping memory when I switch between programs. This surprises me since I have 4 GB of RAM, and the programs I use aren't particularly RAM hungry (Outlook, Emacs, p4win, Firefox, various build tools). I downloaded RAMMap, and it shows over a gigabyte of memory used by "Metafile". From the Sysinternals blog: Metafile is part of the system cache and consists of NTFS metadata. NTFS metadata includes the MFT as well as the other various NTFS metadata files. ... In the MFT each file attribute record takes 1k and each file has at least one attribute record. Add to this the other NTFS metadata files and you can see why the Metafile category can grow quite large on servers with lots of files. So I understand what the "Metafile" data is... I work on large builds comprising hundreds of thousands of files (none are that big, but they add up to several gigabytes). My question is how can I reduce the amount of memory used by "Metafile"? I'm not actively using all those files at once, so why does Windows need to keep info in RAM? Restarting my machine every time I sync a new build is really annoying.

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• What are the IR codes the new Apple Remote (alu) uses?

  - by index

  I would like to clone the new Apple Remote (infrared, second generation, aluminium) just for fun with a microcontroller. Most codes of the previous model can be found in the LIRC remote control database (all except the key combinations menu + <<,play, which unpair, change ID, pair the remote. I also don't know which bit encodes the battery status. It uses a modified 32 bit NEC protocol (reverse LIRC codes bytewise). But the new Apple remote uses two additional codes for the play and the new select button. I don't have a mac, so I can't brute force test codes either ;-) So if someone possesses such a remote and the ability of recording those two new buttons and three combinations I'd really appreciate it. If you can't run LIRC (or it gets confused by the new codes) and you don't have an oscilloscope or logic analyser, maybe you could hook up a photo diode to your sound input and record the codes with Audacity? Just hit record, hit each button and combo a few times, hit stop, upload the uncompressed WAV file to a sharing site, done. That'd be great!

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• Sending mail results in "Sender address rejected: Domain not found"

  - by user1281413

  The setup: WHM/CPanel CentOS 5 server running Exim and Courier for mail services, and BIND for domain name services. I recently moved servers. The old server was running a HIGHLY similar configuration, and all accounts were ported via WHM. However, the server is unable to send, and sometimes receive email. Errors I am seeing (when I do get an error mail back) state: 450 4.1.8 : Sender address rejected: Domain not found Edit for clarity: this is the error response from remote mail servers. Numerous independent mail servers come back with the same error. (Email address is merely one valid example) My first instinct of course was to check the domain records. However, k-t.org appears to have a valid record (including an MX record), even after running it through domain checks on a completely different server elsewhere and online. Note that the issue appears to happen with all the domains hosted on the server, not just k-t.org I have also ensured that a PTR was created. My Googling has only lead me to people who had fairly basic DNS mistakes, but either I'm blind/dumb (possible, DNS is not my strong suite), or it's something that is a bit more archaic. I've run out of ideas, and I can't seem to find anything that could explain why servers are unable to resolve the domains. There doesn't seem to be anything missing or incorrect.

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• 550 Requested action not taken: mailbox unavailable on OS X server 10.6

  - by Marc Graham

  I recently added a new domain to my mail server. I have 1 main server mail.example.com and several others that have the mx record pointing to mail.example.com. My two new domains have the mx record set correctly. The issue I am experiencing is the 550 Requested action not taken: mailbox unavailable error but only when I send emails to accounts on the new urls from an external email account such as gmail. If i send an email to one of the newly made email addresses with the new url from an email account within the same server it delivers normally. For example.... sending [email protected] to [email protected] receives 550 error sending [email protected] to [email protected] works normal here is a report from wormly.com with server and account names changed for obvious reasons Resolving hostname... Connecting... SMTP -> FROM SERVER: 220 existingmailserver.com ESMTP Service ready SMTP -> FROM SERVER: 250-Requested mail action okay, completed 250-SIZE 0 250-AUTH LOGIN PLAIN CRAM-MD5 250-ETRN 250-8BITMIME 250 OK MAIL FROM: [email protected] SMTP -> FROM SERVER: 250 Requested mail action okay, completed RCPT TO: [email protected] SMTP -> FROM SERVER: 550 Requested action not taken: mailbox unavailable SMTP -> ERROR: RCPT not accepted from server: 550 Requested action not taken: mailbox unavailable Message sending failed.

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• What is proper relationship between /etc/hosts and DNS A records for a Linux server?

  - by MountainX

  I have an Ubuntu server. It is going to be a web server with a URI of www.example.com. I have a DNS A record pointing www.example.com to the server's IP address. Let's say I pick "trinity" as the hostname for this server. I want to set up the DNS records correctly. I need reverse DNS to www.example.com, so a CNAME for www.example.com doesn't seem appropriate. Here's my question: Is it considered best practice to set up two DNS records (which in my case would likely be two A records), one for www.example.com and one for trinity.example.com, both pointing to this server's IP address? (Or, even if it is not accepted as a best practice, is it a good idea?) If so, would the following be a proper /etc/hosts file? $ cat /etc/hosts 127.0.1.1 trinity.local trinity 99.100.101.102 trinity.example.com trinity www.example.com This server is a Linode and Linode's docs seem to imply that the above approach is best (if I am reading them correctly). Here's the relevant section. I bolded the line that seems to apply here. Update /etc/hosts Next, edit your /etc/hosts file to resemble the following example, replacing "plato" with your chosen hostname, "example.com" with your system's domain name, and "12.34.56.78" with your system's IP address. As with the hostname, the domain name part of your FQDN does not necesarily need to have any relationship to websites or other services hosted on the server (although it may if you wish). As an example, you might host "www.something.com" on your server, but the system's FQDN might be "mars.somethingelse.com." File:/etc/hosts 127.0.0.1 localhost.localdomain localhost 12.34.56.78 plato.example.com plato The value you assign as your system's FQDN should have an "A" record in DNS pointing to your Linode's IP address. For more information on configuring DNS, please see our guide on configuring DNS with the Linode Manager.

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