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• How to fix a Postfix/MySQL/Dovecot Unknown Host Issue?

  - by thiesdiggity

  I am having an issue with one of my Postfix/Dovecot mail servers and I'm unsure how to fix the problem. I will try to explain it in detail, here it goes: I have an Ubuntu server setup using Virtual hosting with Postfix, Dovecot and MySQL. We have one domain setup as a virtual domain, for this example I am going to use mail.example.com. Under that domain we have one email address. I have another server (MS Exchange) setup using another one of my sub-domains, ex.example.com. The problem is that when I SMTP into the account on mail.example.com and try to send an email to an account on ex.example.com, I get the email returned back to us with an "unknown host" error. Now, I know that the mail.example.com server can resolve the ex.example.com domain because I can ping/dig while SSH'd into it. I can also log into Postfix via Telnet and send an email to an ex.example.com mailbox. I'm guessing that it has something to do with Postfix/Dovecot looking locally for the domain in the virtual domain list because of the tld domain (example.com)? If that's the case, how do I get Postfix/Dovecot to only look locally for the entire URL (mail.example.com) and if it doesn't find it, send it to the correct server by looking up the MX/A records (which I know exist and are setup correctly)? I have been working on this all day and any guidance would be GREATLY appreciated! Thanks for your time!

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• SSH hangs without password prompt

  - by Wilco

  Just reinstalled OS X and for some reason I now cannot connect to a specific machine on my local network via SSH. I can SSH to other machines on the network without any problems, and other machines can SSH to the problematic one as well. I'm not sure where to start looking for problems - can anyone point me in the right direction? Here's a dump of a connection attempt: OpenSSH_5.1p1, OpenSSL 0.9.7l 28 Sep 2006 debug1: Reading configuration data /etc/ssh_config debug1: Connecting to 10.0.1.7 [10.0.1.7] port 22. debug1: Connection established. debug1: identity file /Users/nwilliams/.ssh/identity type -1 debug1: identity file /Users/nwilliams/.ssh/id_rsa type -1 debug1: identity file /Users/nwilliams/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_4.5 debug1: match: OpenSSH_4.5 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '10.0.1.7' is known and matches the RSA host key. debug1: Found key in /Users/nwilliams/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password,keyboard-interactive debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic ... at this point it hangs for quite a while, and then resumes ... debug1: Unspecified GSS failure. Minor code may provide more information Server not found in Kerberos database debug1: Unspecified GSS failure. Minor code may provide more information Server not found in Kerberos database debug1: Unspecified GSS failure. Minor code may provide more information debug1: Next authentication method: publickey debug1: Trying private key: /Users/nwilliams/.ssh/identity debug1: Trying private key: /Users/nwilliams/.ssh/id_rsa debug1: Trying private key: /Users/nwilliams/.ssh/id_dsa debug1: Next authentication method: keyboard-interactive

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• DHCP forwarding behind access list on a Cisco Catalyst

  - by Ásgeir Bjarnason

  I'm having some trouble with forwarding DHCP from a subnet behind an access list on a Cisco Catalyst 4500 switch. I'm hoping somebody can see the mistake I'm making. The subnet is defined like this: (first three octets of IP addresses and vrf name anonymized) interface Vlan40 ip vrf forwarding vrf_name ip address 10.10.10.126 255.255.255.0 secondary ip address 10.10.10.254 255.255.255.0 ip access-group 100 out ip helper-address 10.10.20.36 no ip redirects I tried turning on a VMWare machine on this subnet that was configured to use DHCP, but I never got a DHCP response and the DHCP server didn't receive a request. I tried putting the following in the access-list: access-list 100 permit udp host 10.10.10.254 host 10.10.20.36 eq bootps access-list 100 permit udp host 10.10.10.254 host 10.10.20.36 eq bootpc access-list 100 permit udp host 10.10.20.36 host 10.10.10.254 eq bootps access-list 100 permit udp host 10.10.20.36 host 10.10.10.254 eq bootpc That didn't help. Can anybody see what the problem is? I know that the DHCP server works; our whole network is running off of this DHCP server I also know that the subnet works because we have active servers running on the network The DHCP scope is already defined on the DHCP server The subnet is correctly defined on the VMWare server (already servers running on the subnet on VMWare) Edit 2012-10-19: This is solved! The subnet had formerly been defined as a /25 network, but was then expanded into a /24 network. When the DHCP scope was altered after this change it was done incorrectly; the gateway was moved to .254, the leasable IP range was in the lower half of the /24 subnet but we forgot to change the CIDR prefix from /25 into /24. This happened some 2 years ago, and we didn't need to use DHCP on this server network again until this week. Thank you MDMarra and Jason Seemann for looking at the question and trying to troubleshoot. Now I'm wondering if I should mark Jason's answer as the accepted answer (I am new to the Stack Exchange network, so I don't know the etiquette of what to do if I misstated the question like in this case).

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• hdparm - how to secure erase SATA SSD over USB

  - by cc0

  I have been following this guide on how to secure erase an SSD (trying to improve the performance of mine, which currently only writes at about 30mb/s seq). However, I'm using an USB--Sata docking device to avoid having the harddrive frozen. Apparently using this solution the SATA device is recognized as a SCSI drive, which is giving me trouble. I use the "hdparm -I /dev/sda" command with those parameters, and I get the error; HDIO_DRIVE_CMD (identify) failed: Invalid Exchange After a lot of googling on the issue I can't seem to find anyone who has actually solved this problem. However, I have not tried to just go ahead and use the secure erase. So I'm not sure if this would actually still work. I would love any and all input I can get on this, especially on whether it will still work to do a secure erase with the drive being recognized as a SCSI drive. The drive itself is a Samsung 256gb SSD (pm800), I'm sure you can understand my reluctance to go through this procedure without feeling reasonably safe that I won't mess it up beyond repair.

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• New Training and Support Center Coming Soon!

  - by Ruth

  The CRM On Demand Training and Support Center is getting a face lift. In May 2010 we will unveil the new and improved layout, look and feel, and even some new content. Some of you told us loud and clear that you wanted an easier way to find our training courses and other important information. Well, here you are: Immediately you see the look and feel has changed and things have moved around a bit. You may ask, "How can I find the training catalog? Service requests? Downloads?" There are a few ways to find what you're looking for. You may use the search box to find training, quick guides, downloads, best practices, FAQs and more. You may also click the tabs or links in the blue bar, like Browse Training, to browse other documents and information. Here is a brief outline of the tabs and links that will help as you navigate this new tool: The Support tab provides alerts and notifications specific to your application environment. The Get Started tab is organized by role and contains links to resources aimed at helping you get the most out of your first 30 days with CRM On Demand. The Learn More tab outlines information in key topic areas, like administration, integration, and reports. Go to this tab to get the resources you need to move beyond the basics. The Release Information tab contains information specific to the current and upcoming releases of CRM On Demand. Access this tab to learn about and prepare for upgrades to your CRM On Demand application. The Best Practices tab contains a compilation of knowledge gained by experts that work with CRM On Demand day in and day out. Access this knowledge to benefit from their vast experience. The Communities tab offers connections to others in the CRM On Demand community through forums, communities, blogs, and more. The Browse training link opens the training catalog.Take a look at the instructor-led training, Webinars, quick guides, use cases, and tools available to you. The Browse Knowledge link takes you to our knowledge base where you can get answers to frequently asked questions. The Submit a Service Request link directs you to My Oracle Support where you can log a service request. The steps in that process have not changed. The Web Services Library provides simple APIs and a link to Oracle Sample Code where you can get samples that can help you build custom integrations. The Add-On Applications link allows access to our downloadable applications that allow you to extend the functionality of CRM On Demand. The Templates and Tools link provides access to resources that can help you design and build CRM On Demand to meet your company's specific needs. A lot has changed and I know it is a lot to take in. To help you out, we have a printable quick guide that you can use during this transition. As always, let us know what you think: [email protected].

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• Changing IP address in IIS for SharePoint site results in Directory listing error

  - by Dan

  I have a server here that has 2 roles. One is Exchange 2007 and the other is MOSS 2007. In IIS i have a site, go.domain.com which has our OWA. The other is internal.domain.com which is the MOSS site. I have given the NIC local IPs and each site is using host headers. The GO site has an SSL cert from NetSol, and the MOSS site has a self signed. Right now going to either shows the NetSol site, which browsers complain about when going to the internal.domain.com site, obviously, since they are on the same IP in IIS. Both sites have always run off the original IP of 10.0.0.3 in IIS. When i added the second IP to the NIC, (10.0.0.6) and changed the Sharepoint site in IIS to use this for http and https access, I now get this message in a browser when trying to connect. Directory Listing Denied This Virtual Directory does not allow contents to be listed. Changing the IP back to 10.0.0.3 and the internal site is back up. What am I missing here? Do i need to fool around with Alternate Access Mappings in Central Admin? Am i completely missing the point with multiple SSL certs and host headers?

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• How the "migrations" approach makes database continuous integration possible

  - by David Atkinson

  Testing a database upgrade script as part of a continuous integration process will only work if there is an easy way to automate the generation of the upgrade scripts. There are two common approaches to managing upgrade scripts. The first is to maintain a set of scripts as-you-go-along. Many SQL developers I've encountered will store these in a folder prefixed numerically to ensure they are ordered as they are intended to be run. Occasionally there is an accompanying document or a batch file that ensures that the scripts are run in the defined order. Writing these scripts during the course of development requires discipline. It's all too easy to load up the table designer and to make a change directly to the development database, rather than to save off the ALTER statement that is required when the same change is made to production. This discipline can add considerable overhead to the development process. However, come the end of the project, everything is ready for final testing and deployment. The second development paradigm is to not do the above. Changes are made to the development database without considering the incremental update scripts required to effect the changes. At the end of the project, the SQL developer or DBA, is tasked to work out what changes have been made, and to hand-craft the upgrade scripts retrospectively. The end of the project is the wrong time to be doing this, as the pressure is mounting to ship the product. And where data deployment is involved, it is prudent not to feel rushed. Schema comparison tools such as SQL Compare have made this latter technique more bearable. These tools work by analyzing the before and after states of a database schema, and calculating the SQL required to transition the database. Problem solved? Not entirely. Schema comparison tools are huge time savers, but they have their limitations. There are certain changes that can be made to a database that can't be determined purely from observing the static schema states. If a column is split, how do we determine the algorithm required to copy the data into the new columns? If a NOT NULL column is added without a default, how do we populate the new field for existing records in the target? If we rename a table, how do we know we've done a rename, as we could equally have dropped a table and created a new one? All the above are examples of situations where developer intent is required to supplement the script generation engine. SQL Source Control 3 and SQL Compare 10 introduced a new feature, migration scripts, allowing developers to add custom scripts to replace the default script generation behavior. These scripts are committed to source control alongside the schema changes, and are associated with one or more changesets. Before this capability was introduced, any schema change that required additional developer intent would break any attempt at auto-generation of the upgrade script, rendering deployment testing as part of continuous integration useless. SQL Compare will now generate upgrade scripts not only using its diffing engine, but also using the knowledge supplied by developers in the guise of migration scripts. In future posts I will describe the necessary command line syntax to leverage this feature as part of an automated build process such as continuous integration.

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• AWS Application - Subscription Payments Scheduled but Not Initializing

  - by nicorellius

  I briefly browsed the AWS forums but these are not nearly as easy to use and efficient as Stack Exchange derived ones, so here I am... the company I work for has an app on the AWS cloud. In general the app works well. However, since it is new, we haven't had many customers and the ones who signed up are now coming to the point where their subscriptions to our service should be renewed. In comes my question. When I query the database for payment status of certain subscriptions using the console, I get what I would expect: Instrument XYZ is on a Monthly subscription (subscription=xxxyyyzz). The subscription is active with an expiration date of 19 Apr 2010 10:43 Z The payment token will expire on 1 Dec 2012 12:00 Z There are xy runs remaining. The subscription fee of $XX.xx will be charged on 17 Apr 2010 10:43 Z OK, this is great. According to this, I would expect the next payment to be initiated on 17 Apr. The reason I am asking is because for a different user last month I got this same output but the payment never went through, i.e., was not initiated through Amazon payments. The user didn't see the payment go through and neither did we. It should be noted that the initial payments were received. The sign up process works and if the user goes to "pay" from within our app, they will be directed to https://payments.amazon.com to make their payment. Any ideas?

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• Amazon EC2 Reserved Instances: "Heavy Utilization" clarification

  - by gravyface

  Should be another easy one here, but I need clarification on what they define as "heavy utilization" for Reserved Instance types. From their Website: Heavy Utilization RIs – Heavy Utilization RIs offer the most absolute savings of any Reserved Instance type. They’re most appropriate for steady-state workloads where you’re willing to commit to always running these instances in exchange for our lowest hourly usage fee. With this RI, you pay a little higher upfront payment than Medium Utilization RIs, a significantly lower hourly usage fee, and you’re charged that lower hourly rate for every hour in the Reserved Instance term you purchase. Using Heavy Utilization RIs, you can save up to 41% for a 1-year term and 58% for a 3-year term vs. running On-Demand Instances. If you’re trying to find a break-even utilization, you’re economically advantaged using Heavy Utilization RIs (vs. On-Demand Instances) if you plan to use your instance more than 43% of a 1-year term or 79% of a 3-year term. I'm assuming that, if I'm planning on running a 24/7 Web Server, then regardless of how many resources I consume (bandwidth, cpu cycles, memory), I would want to go with a Heavy Utilization Reserved Instance? This one Web Server in particular will likely barely budge the cpu, but it needs to be up and running 24/7. Not 100% on what they're defining as "heavy".

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• Kerberos service on win2k dc will not start following disk failure

  - by iwilson68

  Hi, I have a win2k (mixed mode domain) with 4 DCS. One of these also acts an exchange 2000 server which uses 2 logical volumes from an MSA 2000 array. AD etc is stored on local drives. We experienced a problem last week when the raid array fell back to a redundant controller and this temporarily meant that the two logical drives were not visible to the server for around 5 minutes and a couple of reboots. The log records these Events as Type: Warning Event Source: Disk Event Category: None Event ID: 51 Date: 06/11/2009 Time: 11:46:23 User: N/A Computer: server1 Description: An error was detected on device \Device\Harddisk1\DR1 during a paging operation. Following these problems, the server “kerberos Key Distribution” service refuses to start with an “error.31 a device attached to the system is not functioning”. All other automatic start services (including net logon) are running and there are no DNS issues etc. All devices are also functioning but the two logical MSA disks are now numbered in the Windows Disk Management MMC as 2 and 4 and I suspect that they may have previously been identified as disks 1 & 2 and perhaps windows still sees this as an ongoing failure?? Replication has not been affected but obviously there are many audit failures in the security log relating to users and workstations presumably linked to the Kerberos issue. Attempting to manually start the kerberos service generates the following in the System Log. Event Type: Error Event Source: Service Control Manager Event Category: None Event ID: 7023 Date: 09/11/2009 Time: 09:46:55 User: N/A Computer: Server1 Description: The Kerberos Key Distribution Center service terminated with the following error: A device attached to the system is not functioning. DCDIAG passes all tests except “Advertising” and “Services” which I believe relate directly to the failure of Kerberos only. Any advice would be appreciated.

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• Easiest way to send encrypted email?

  - by johnnyb10

  To comply with Massachusetts's new personal information protection law, my company needs to (among other things) ensure that anytime personal information is sent via email, it's encrypted. What is the easiest way to do this? Basically, I'm looking for something that will require the least amount of effort on the part of the recipient. If at all possible, I really want to avoid them having to download a program or go through any steps to generate a key pair, etc. So command-line GPG-type stuff is not an option. We use Exchange Server and Outlook 2007 as our email system. Is there a program that we can use to easily encrypt an email and then fax or call the recipient with a key? (Or maybe our email can include a link to our website containing our public key, that the recipient can download to decrypt the mail?) We won't have to send many of these encrypted emails, but the people who will be sending them will not be particularly technical, so I want it to be as easy as possible. Any recs for good programs would be great. Thanks.

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• F# and the rose-tinted reflection

  - by CliveT

  We're already seeing increasing use of many cores on client desktops. It is a change that has been long predicted. It is not just a change in architecture, but our notions of efficiency in a program. No longer can we focus on the asymptotic complexity of an algorithm by counting the steps that a single core processor would take to execute it. Instead we'll soon be more concerned about the scalability of the algorithm and how well we can increase the performance as we increase the number of cores. This may even lead us to throw away our most efficient algorithms, and switch to less efficient algorithms that scale better. We might even be willing to waste cycles in order to speculatively execute at the algorithm rather than the hardware level. State is the big headache in this parallel world. At the hardware level, main memory doesn't necessarily contain the definitive value corresponding to a particular address. An update to a location might still be held in a CPU's local cache and it might be some time before the value gets propagated. To get the latest value, and the notion of "latest" takes a lot of defining in this world of rapidly mutating state, the CPUs may well need to communicate to decide who has the definitive value of a particular address in order to avoid lost updates. At the user program level, this means programmers will need to lock objects before modifying them, or attempt to avoid the overhead of locking by understanding the memory models at a very deep level. I think it's this need to avoid statefulness that has led to the recent resurgence of interest in functional languages. In the 1980s, functional languages started getting traction when research was carried out into how programs in such languages could be auto-parallelised. Sadly, the impracticality of some of the languages, the overheads of communication during this parallel execution, and rapid improvements in compiler technology on stock hardware meant that the functional languages fell by the wayside. The one thing that these languages were good at was getting rid of implicit state, and this single idea seems like a solution to the problems we are going to face in the coming years. Whether these languages will catch on is hard to predict. The mindset for writing a program in a functional language is really very different from the way that object-oriented problem decomposition happens - one has to focus on the verbs instead of the nouns, which takes some getting used to. There are a number of hybrid functional/object languages that have been becoming more popular in recent times. These half-way houses make it easy to use functional ideas for some parts of the program while still allowing access to the underlying object-focused platform without a great deal of impedance mismatch. One example is F# running on the CLR which, in Visual Studio 2010, has because a first class member of the pack. Inside Visual Studio 2010, the tooling for F# has improved to the point where it is easy to set breakpoints and watch values change while debugging at the source level. In my opinion, it is the tooling support that will enable the widespread adoption of functional languages - without this support, people will put off any transition into the functional world for as long as they possibly can. Without tool support it will make it hard to learn these languages. One tool that doesn't currently support F# is Reflector. The idea of decompiling IL to a functional language is daunting, but F# is potentially so important I couldn't dismiss the idea. As I'm currently developing Reflector 6.5, I thought it wise to take four days just to see how far I could get in doing so, even if it achieved little more than to be clearer on how much was possible, and how long it might take. You can read what happened here, and of the insights it gave us on ways to improve the tool.

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• Setting up Windows SBS 2008 network on Xen

  - by samyboy

  I'm trying to install a Windows SBS 2008 server in a Xen environment. The OS is booting fine. Unfortunately I can't figure out how to set up the network settings. Dom0 is a Debian Lenny hosting around 10 virtual servers. Here are the settings I'm using in the hosted Windows SBS: IP address: 10.20.0.8 Network mask: 255.255.0.0 Gateway: 10.20.0.1 Note that during the installation stage, Windows set the net mask at 255.255.255.0 without letting me choose. Gross. Windows SBS tells me I have a "limited connection". I can't ping the gateway nor any other IP except localhost and it's own IP (10.20.0.8). Here is the Xen config file: kernel = '/usr/lib/xen-3.2-1/boot/hvmloader' builder = 'hvm' memory = '4096' device_model='/usr/lib/xen-3.2-1/bin/qemu-dm' acpi=1 apic=1 pae=1 vcpus=1 name = 'winexchange' # Disks disk = [ 'phy:/dev/wnghosts/exchange-disk,ioemu:hda,w', 'file:/mnt/freespace/ISO/DVD1_Installation.iso,ioemu:hdc:cdrom,r' ] # Networking vif = [ 'mac=00:16:3E:0A:D0:1B, type=ioemu, bridge=xenbr0'] # video stdvga=0 serial='pty' ne2000=0 # Behaviour boot='c' sdl=0 # VNC vfb = [ 'type=vnc' ] vnc=1 vncdisplay=1 vncunused=1 usbdevice='tablet' This config is working with others Windows XP domU's. I tried to change the ne2000 values with 0 and 1 with no effect. I am far from having good Windows administration skills so I guess I definitely need some help on this case. Thanks.

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• How do I SSH tunnel using PuTTY or SecureCRT through gateway/proxy to development server?

  - by DAE51D

  We have some unix boxes setup in a way that to get to the development box via ssh, you have to ssh into a 'user@jumpoff' box first. There is no direct connection allowed on 'dev' via ssh from anywhere but 'jumpoff'. Furthermore, only key exchange is allowed on both servers. And you always login to the development box as 'build@dev'. It's painful to always do that hopping. I know this can be done with SOCKS or a Tunnel or something... I have setup a FreeBSD VM and I can get things to work awesome using unix ssh tools. Basically all I do is make sure my vm's ~/.ssh/id_rsa.pub key is on both jumpoff and dev and use this ~/.ssh/config file: # Development Server Host ext-dev # this must be a resolvable name for "dev" from Jumpoff Hostname 1.2.3.4 User build IdentityFile ~/.ssh/id_rsa # The Jumpoff Server Host ext Hostname 1.1.1.1 User daevid Port 22 IdentityFile ~/.ssh/id_rsa # This must come below all of the above Host ext-* ProxyCommand ssh ext nc $(echo '%h'|cut -d- -f2-) 22 Then I just simply type "ssh ext-dev" and I'm in like Flynn. The problem is I can't get this same thing to work using either PuTTY or SecureCRT -- and to be honest I've not found any tutorials that really walk me through it. I see many on setting up some kind of proxy tunnel for Firefox, but it doesn't seem to be the same concept. I've been messing with various trial and error most all day and nothing has worked (obviously) and I'm at the end of my ssh knowledge and Google searching. I found this link which seemed to be perfect, but it doesn't work for me. The "Master" connects fine, but the "client" portion doesn't connect. It tells me, the remote system refused the connection. http://www.vandyke.com/support/tips/socksproxy.html I've got the VM, PuTTY and SecureCRT all using the same public/private key pairs to make things consistent and easier to debug. Does anyone have a straight up example of how to do this in Windows?

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• Is it possible to setup an internal test email server to keep all mail sent to it?

  - by MattGrommes

  We have a need at my work to setup a test email server that will take all mail sent to it for delivery and instead just dump it into an account for later retrieval. I've been out of the email server configuration game long enough that I think that's possible but I don't know for sure. As a more specific example of what we need: We have code that sends emails to outside clients in certain cases. We want to point our code to a test server that will accept those emails, but not let them get to the outside world (yes, it's happened before, oops). We then need to be able to verify that Email X would have gotten sent to Client Y if we had sent to the real server. As a bonus, we have a error email alias on our real server that goes to the programmers that we would like to keep getting email from. So anything sent to that alias on the test server would forward to our real server for delivery. My preference is for postfix but our IT staff seems set on using sendmail (or Exchange) for everything so hints/pointers for either server would be helpful. Thanks a lot.

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• VMware vSphere 4.1 and BackupExec 2010

  - by Josh

  I'm sure a common problem with most shops is backups, their size, and the window in which you have to back up the data. What we are working with: VMware vSphere 4.1 Cluster PS4000XV Equallogic Storage Array (1.6TB Volume dedicated for Backup to Disk) Physical Backup Server with a single LTO4 drive. BackupExec 2010 R3 with the following agents, Exchange, SQL, Active Directory, VMware. Dual Gigabit MPIO Connections between all devices (Storage Array, Backup Server, VM Hosts) What we would like to accomplish: I would like to implement an efficient Backup to Disk to Tape solution where all of our VMs are backed up to the Storage Array first, and then once completely backed up to the array are replicated to tape. In the event we needed to recover, we would be able to do so directly from tape. Where we are at currently. Of the several ways I have setup the jobs in Backup Exec 2010 R3 the backup jobs all queue up at the same time, as soon as a job is finished backing up to disk it then starts that same job to tape, but pulling from the original source instead of the designated B2D location. I understand that I could create a job that backs up the "Backup to Disk" folder to tape, but in the event of restoration, I would first need to stage the data in the B2D folder before I could restore the VM. I would really like to hear from individuals in similar situations. Any and all comments and critiques are appreciated.

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• Different versions of iperf for windows give totally different results

  - by Albert Mata

  Measuring TCP output from a Windows client to Solaris server: WXP SP3 with iperf 1.7.0 -- returns an average around 90Mbit Same client, same server but iperf 2.0.5 for windows -- returns an average of 8.5 Mbit Similar discrepancies have been observed connecting to other servers (W2008, W2003) It's difficult to get to some conclusions when different versions of the same tool provide vastly different results. Example below: C:\tempiperf -v (from iperf.fr) iperf version 2.0.5 (08 Jul 2010) pthreads C:\tempiperf -c solaris10 Client connecting to solaris10, TCP port 5001 TCP window size: 64.0 KByte (default) [ 3] local 10.172.181.159 port 2124 connected with 10.172.180.209 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.2 sec 10.6 MBytes 8.74 Mbits/sec Abysmal perfomance, but now I test from the same host (Windows XP SP3 32bit and 100Mbit) to the same server (Solaris 10/sparc 64bit and 1Gbit running iperf 2.0.5 with default window of 48k) with the old iperf C:\temp1iperf -v iperf version 1.7.0 (13 Mar 2003) win32 threads C:\temp1iperf.exe -c solaris10 -w64k Client connecting to solaris10, TCP port 5001 TCP window size: 64.0 KByte [1208] local 10.172.181.159 port 2128 connected with 10.172.180.209 port 5001 [ ID] Interval Transfer Bandwidth [1208] 0.0-10.0 sec 112 MBytes 94.0 Mbits/sec So one iperf with a 64k window says 8.75Mbit and the old iperf with the same window size says 94.0Mbit. These results are constant through repeated tests. From my testing launching iperf(old) with window size "x" and iperf(new) with window size "x" instead of producing the same or very close results produce totally different results. The only difference I see is the old compiled as win32 threads vs. pthreads but parallelism (-P 10) appears to work in both. Anyone has a clue or can recommend a tool that gives results I can trust?? EDIT: Looking at traces from (old) iperf it sets the TCP Window Scale flag to 3 in the SYN packet, when I run the (new) iperf this is set to 0 in the initial packet. A quick analysis of the window size through the exchange shows the (old) iperf moving back and forth but mostly at 32k while the (new) iperf mostly keeps at 64k. Maybe it will help somebody to connect the dots.

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• VPS with Plesk, one ip, and godaddy (definely need help)

  - by Francesco

  Hi there, here's my situation : i've Plesk 8.3.0 with one IP and i've registered my domains at godaddy.com My problem : i cannot figure out how to configure plesk and godaddy to have my domains (6) properly working into the VPS. i've only one IP, so i can't have my personal NS and need to use godaddy ns. But.. how do i set all the stuff ? I've made a try but it's not working. Please take a look : This is an example of how the domain i'm actually working on is configured On Plesk : Host Record type Value 1.2.3.4 / 24 PTR mydomain.com. ftp.mydomain.com. CNAME mydomain.com. mail.mydomain.com. A 1.2.3.4 ns.mydomain.com. A 1.2.3.4 mydomain.com. NS ns.mydomain.com. mydomain.com. A 1.2.3.4 mydomain.com. MX (10) mail.mydomain.com. webmail.mydomain.com. A 1.2.3.4 www.mydomain.com. CNAME mydomain.com. On godaddy,(Total DNS Control) for the same domain i have this setup : A (Host) Host Points To TTL Actions * 1.2.3.4 1 Hour CNAMES (Aliases) Host Points To TTL Actions e email.secureserver.net 1 Hour email email.secureserver.net 1 Hour ftp @ 1 Hour imap imap.secureserver.net 1 Hour mail pop.secureserver.net 1 Hour mobilemail mobilemail-v01.prod.mesa1.secureserver.net 1 Hour pda mobilemail-v01.prod.mesa1.secureserver.net 1 Hour pop pop.secureserver.net 1 Hour smtp smtp.secureserver.net 1 Hour webmail webmail.secureserver.net 1 Hour www @ 1 Hour MX (Mail Exchange) Priority Host Goes To TTL Actions 10 @ mailstore1.secureserver.net 1 Hour 0 @ smtp.secureserver.net Host Points To TTL Actions @ ns53.domaincontrol.com @ ns54.domaincontrol.com What should i correct ? Thanks for helping me Francesco

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• Server Restart's and Respective Orders

  - by TheD

  EDIT:Not meaning to be disrespectful to any of the answers, but, the main question was whether rebooting a DC at the beginning of a cycle, then all the other servers, or rebooting it at the end once all the others are back online - is there a reason for doing it either way? I'm still not sure based on current responses. This will most likely seem like a fairly, maybe even stupid, question, but it's something I have been wondering about. As part of a regular process for clients servers are restarted remotely after patches and every client tends to have a similar order - but there always seems to be a small debate when it comes down to when do you reboot your DC. For example, 4 servers, 1 DC, 1xExchange, 1xBESX and 1xRandom, lets say it has some CRM software installed, is it best to reboot the DC first, then Exchange, then BESX and so on - or reboot all the servers, then reboot the DC last? - Perhaps it doesn't matter at all and it's just a case of how you have always done it. Would it change in a Hyper-V environment for example, with a physical DC, 1 VHost with all your servers virtualised on that Host? Rebooting the VHost and Virtual Machines first, then the DC at the end, or vice versa? Thanks!

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• Industry perspectives on managing content

  - by aahluwalia

  Earlier this week I was noodling over a topic for my first blog post. My intention for this blog is to bring a practitioner's perspective on ECM to the community; to share and collaborate on best practices and approaches that address today's business problems. Reviewing my past 14 years of experience with web technologies, I wondered what topic would serve as a good "conversation starter". During this time, I received a call from a friend who was seeking insights on how content management applies to specific industries. She approached me because she vaguely remembered that I had worked in the Health Insurance industry in the recent past. She wanted me to tell her about the specific business needs of this industry. She was in for quite a surprise as she found out that I had spent the better part of a decade managing content within the Health Insurance industry and I discovered a great topic for my first blog post! I offer some insights from Health Insurance and invite my fellow practitioners to share their insights from other industries. What does content management mean to these industries? What can solution providers be aware of when offering solutions to these industries? The United States health care system relies heavily on private health insurance, which is the primary source of coverage for approximately 58% Americans. In the late 19th century, "accident insurance" began to be available, which operated much like modern disability insurance. In the late 20th century, traditional disability insurance evolved into modern health insurance programs. The first thing a solution provider must be aware of about the Health Insurance industry is that it tends to be transaction intensive. They are the ones who manage and administer our health plans and process our claims when we visit our health care providers. It helps to keep in mind that they are in the business of delivering health insurance and not technology. You may find the mindset conservative in comparison to the IT industry, however, the Health Insurance industry has benefited and will continue to benefit from the efficiency that technology brings to traditionally paper-driven processes. We are all aware of the impact that Healthcare reform bill has had a significant impact on the Health Insurance industry. They are under a great deal of pressure to explore ways to reduce their administrative costs and increase operational efficiency. Overall, administrative costs of health insurance include the insurer's cost to administer the health plan, the costs borne by employers, health-care providers, governments and individual consumers. Inefficiencies plague health insurance, owing largely to the absence of standardized processes across the industry. To achieve this, industry leaders have come together to establish standards and invest in initiatives to help their healthcare provider partners transition to the next generation of healthcare technology. The move to online services and paperless explanation of benefits are some manifestations of technological advancements in health insurance. Several companies have adopted Toyota's LEAN methodology or Six Sigma principles to improve quality, reduce waste and excessive costs, thereby increasing the value of their plan offerings. A growing number of health insurance companies have transformed their business systems in the past decade alone and adopted some form of content management to reduce the costs involved in administering health plans. The key strategy has been to convert paper documents and forms into electronic formats, automate the content development process and securely distribute content to various audiences via diverse marketing channels, including web and mobile. Enterprise content management solutions can enable document capture of claim forms, manage digital assets, integrate with Enterprise Resource Planning (ERP) and Human Capital Management (HCM) solutions, build Business Process Management (BPM) processes, define retention and disposition instructions to comply with state and federal regulations and allow eBusiness and Marketing departments to develop and deliver web content to multiple websites, mobile devices and portals. Content can be shared securely within and outside the organization using Information Rights Management.  At the end of the day, solution providers who can translate strategic goals into solutions that maximize process automation, increase ease of use and minimize IT overhead are likely to be successful in today's health insurance environment.

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• Dedicated server with a lot of storage and good support - and cost-effective

  - by Martin Burger

  Hello, I am from Germany and looking for a dedicated server located in the US with a lot of storage: 750 - 1500 GB. CPU speed and amount of memory are secondary, the server will host large amounts of media files via http and ftp - the basic task is to help people exchange media files. In Germany, there are some good offers, like "Root Server EQ6" at www.hetzner.de. For example, that company provides support of high quality, and their plans are very cost-effective. The plan mentioned above costs about $90 per month and provides two 1500 GB SATA-II HDDs (Software-RAID 1). In the US, I found (amongst others) Go Daddy and rackspace. Go Daddy offers some "Storage Monster" plans that include 2 x 1,000 GB hard drives for about $180 per month - already twice as much as Hetzner above. However, I found some blog and forum entries that complain about the support provided by Go Daddy. Rackspace seems to provide decent support, but they are very "upscale". Their dedicated servers are customizable and start at $419 - thus, about 4.5 times as much as Hetzner. Can anybody recommend a solution / plan that is comparable to the one by Hetzner? Or are prices for dedicated servers in general much higher than in Germany? Regards, Martin

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• Postfix Relay to Office365

  - by woodsbw

  I am trying to setup a Postfix server on a Linux box to relay all mail to our Office365 (Exchange, hosted by Microsoft) mail server, but, I keep getting an error regarding the sending address: BB338140DC1: to= relay=pod51010.outlook.com[157.56.234.118]:587, delay=7.6, delays=0.01/0/2.5/5.1, dsn=5.7.1, status=bounced (host pod51010.outlook.com[157.56.234.118] said: 550 5.7.1 Client does not have permissions to send as this sender (in reply to end of DATA command)) Office 365 requires that the sending address in the MAIL FROM and From: header be the same as the address used to authenticate. I have tried everything I can think of in the config to get this working. My postconf -n: append_dot_mydomain = no biff = no config_directory = /etc/postfix debug_peer_list = 127.0.0.1 inet_interfaces = loopback-only inet_protocols = all mailbox_size_limit = 0 mydestination = xxxxx, localhost.localdomain, localhost myhostname = localhost mynetworks = 127.0.0.0/8 recipient_delimiter = + relay_domains = our.doamin relayhost = [pod51010.outlook.com]:587 sender_canonical_classes = envelope_sender sender_canonical_maps = hash:/etc/postfix/sender_canonical smtp_always_send_ehlo = yes smtp_sasl_auth_enable = yes smtp_sasl_mechanism_filter = login smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = smtp_tls_CAfile = /etc/postfix/cacert.pem smtp_tls_loglevel = 1 smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes sender_canonical: www-data [email protected] root [email protected] www-data@localhost [email protected] root@localhost [email protected] Also, sasl_passwd is set to the correct credentials (tested them using swaks multiple times.) Authentication works, and sends the message when the from headers are correct (also tested using swaks....which works) The emails are coming from PHP, so I have also tried altering the sendmail path in php.ini to use pass the correct from address via -f So, for some reason, mail coming from www-data and root are not having the from fields rewritten to Office 365's satisfaction, and it won't send the message. Any postfix gurus out there that can help me setup this relay?

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• How do I know what hardware to buy to meet my needs?

  - by Darth Android

  While Stack Exchange does not permit shopping recommendations, it doesn't provide any general advice to consider when buying hardware. So, instead of just telling those that ask what to buy that it's not allowed, let's tell them how to figure out what they need. When looking forward to build a computer, how do I know what to buy? How do I find out if a given CPU will be enough for a certain game or application that I want to run? How do I find out if a given graphics card will be enough for a certain game or application? What is important when looking at motherboards? How much memory do I need? How do I know how much wattage I need for a power supply? What size case do I need? What relevant standards do I need to read up on and be aware of? PCI, PCIe, SATA, USB 2.0, USB 3.0, etc... What "gotchas" do I need to be on the lookout for? Please keep responses generation-agnostic to ensure they will be helpful to our future users. :)

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• How to set up a serial connection to a Windows 7 computer

  - by oli_arborum

  I need to set up a "dial in" connection to a Windows 7 (Ultimate) computer via a serial null-modem cable to be able to connect from a Windows XP client to that computer and exchange data over IP. Question 1: How do I do that? I did neither find the information via Google nor in the MSDN. Seems like no one tried ever before... ;-) I already managed to install a legacy modem device called "Communications cable between two computers" and found the menu entry "New Incoming Connection..." in Network and Internet Network Connections. When I finish this wizard I get the message that the "Routing and Remote Access service" cannot be started. In the event viewer I see the following error messages: "The currently configured authentication provider failed to load and initialize successfully. The requested name is valid, but no data of the requested type was found." (Source: RemoteAccess, EventID: 20152) "The Routing and Remote Access service terminated with service-specific error The requested name is valid, but no data of the requested type was found." (Source: Service Control Manager, EventID: 7024) The Windows 7 installation is "naked", i.e. no additional software or services are installed. Question 2: Am I on the right path to set up the connection? Question 3: How can I get the Routing and Remote Access service running?

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• Outlook 2010 OSC with SharePoint 2010 documentation or help

  - by skypanther

  I'm looking for documentation or help to set up Outlook 2010's social connector to work with SharePoint 2010. I can't find much info other than some MS videos and blogs saying that it's possible. They say "we are already connected to SharePoint, so let's add in the XYZ connector..." but don't tell how they connected to SharePoint. Server A: Win2K8 x64, Exchange 2010 x64, domain controller Server B: Win2K8 x64, domain member, SQL Server 2008 R2, SharePoint 2010 Client: Win 7, domain member, with Office 2010 RTM (most every component installed, including the OSC) I've added my domain users to a group. In SharePoint, I granted that domain group permissions to access the site. As any of the domain users, I can use IE to log on the My Sites pages. From there, I can add lists, blog posts, status updates etc. In Outlook, I can add a SharePoint contact to my Contacts list. But, all I see in the People Pane is emails my users have exchanged. I don't see any of the other SharePoint status updates. When I try to use the "Add this person to a social network" link to connect them with my My Sites, the process fails. It doesn't give any sort of error message that helps me figure out why. Just a "Try Again" button that likewise fails. Any guides, links, suggestions? I'm pretty novice-level with SharePoint but mildly adept with the other technologies.

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