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  • Executing multiple update statements in PHP

    - by theband
    I have three update statements to be executed in PHP, i am getting the values of all these as return parameters. How to execute each statement independely and finally show the end user the result that it has been successfully updated. <?php public function name($parameter1,$parameter2.... $parametern) { $records=array(); $sql=""; $sql2=""; $sql3=""; $result=mysql_query($sql); //return $result; if(!$result){throw new Exception(mysql_error());} if(mysql_num_rows($result)==0){return $records;} while($row=mysql_fetch_assoc($result)){$records[]=$row;} return $records; } ?> Then how finally we can get the result in my row object.

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  • Please explain this delete top 100 SQL syntax

    - by Patrick
    Basically I want to do this: delete top( 100 ) from table order by id asc but MS SQL doesn't allow order in this position The common solution seems to be this: DELETE table WHERE id IN(SELECT TOP (100) id FROM table ORDER BY id asc) But I also found this method here: delete table from (select top (100) * from table order by id asc) table which has a much better estimated execution plan (74:26). Unfortunately I don't really understand the syntax, please can some one explain it to me? Always interested in any other methods to achieve the same result as well. EDIT: I'm still not getting it I'm afraid, I want to be able to read the query as I read the first two which are practically English. The above queries to me are: delete the top 100 records from table, with the records ordered by id ascending delete the top 100 records from table where id is anyone of (this lot of ids) delete table from (this lot of records) table I can't change the third one into a logical English sentence... I guess what I'm trying to get at is how does this turn into "delete from table (this lot of records)". The 'from' seems to be in an illogical position and the second mention of 'table' is logically superfluous (to me).

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  • What is wrong with this sql statement?

    - by chandru_cp
    I am trying to fetch records based on two dates from sql server... Select * from table where CreatedDate between @StartDate and @EndDate and i pass 5/12/2010 and 5/12/2010 (ie) fetching records for today... I have 17 records dated 5/12/2010 but none seems to get selected.... EDIT: I use this but when i debug my value it shows 5/12/2010 12:00:00AM DateTime baseDate = DateTime.Today; var today = baseDate; GetBookingReportByDate(today,today);

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  • Puppet and Vim fighting over Ruby version

    - by devians
    I have installed puppet from the .dmg from puppetlabs. If I remove ruby 1.9.3, puppet works, but other things like my vim install (dependant plugins) do not. According to http://docs.puppetlabs.com/guides/platforms.html#ruby-versions 1.9.3 is supported. So whats going wrong with puppet? % uname -a Darwin Kusanagi.local 11.4.2 Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64 x86_64 % which ruby /usr/local/bin/ruby % ruby --version ruby 1.9.3p327 (2012-11-10 revision 37606) [x86_64-darwin11.4.2] % /usr/bin/ruby --version ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin11.0] % brew info ruby 1 ? ruby: stable 1.9.3-p327, HEAD http://www.ruby-lang.org/en/ Depends on: pkg-config, readline, gdbm, libyaml /usr/local/Cellar/ruby/1.9.3-p327 (796 files, 17M) * https://github.com/mxcl/homebrew/commits/master/Library/Formula/ruby.rb ==> Options --with-tcltk Install with Tcl/Tk support --with-suffix Suffix commands with "19" --universal Build a universal binary --with-doc Install documentation ==> Caveats NOTE: By default, gem installed binaries will be placed into: /usr/local/Cellar/ruby/1.9.3-p327/bin You may want to add this to your PATH. % puppet /usr/local/Cellar/ruby/1.9.3-p327/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- puppet/util/command_line (LoadError) from /usr/local/Cellar/ruby/1.9.3-p327/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require' from /usr/bin/puppet:3:in `<main>'

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  • chkdsk, SeaTools, and "does not have enough space to replace bad clusters"

    - by Zian Choy
    When I tried to do a Windows Vista Complete PC Backup, I received an error message that blathered about bad sectors. Then, when I ran chkdsk /r on the destination drive, this is what I got: C:\Windows\system32>chkdsk /R E: The type of the file system is NTFS. Volume label is Desktop Backup. CHKDSK is verifying files (stage 1 of 5)... 822016 file records processed. File verification completed. 1 large file records processed. 0 bad file records processed. 0 EA records processed. 0 reparse records processed. CHKDSK is verifying indexes (stage 2 of 5)... 848938 index entries processed. Index verification completed. 0 unindexed files processed. CHKDSK is verifying security descriptors (stage 3 of 5)... 822016 security descriptors processed. Security descriptor verification completed. 13461 data files processed. CHKDSK is verifying file data (stage 4 of 5)... The disk does not have enough space to replace bad clusters detected in file 239649 of name . The disk does not have enough space to replace bad clusters detected in file 239650 of name . The disk does not have enough space to replace bad clusters detected in file 239651 of name . An unspecified error occurred.f 822000 files processed) Yet, when I ran the SeaTools short & long generic tests on the Seagate disk, I didn't receive any errors. I know that I could reformat the disk and try running chkdsk /r again but I'd prefer to avoid waiting 4 hours in the hope that the problem was magically fixed. On the other hand, if I RmA the drive to Seagate, I have no SeaTools error number to use and they may claim that the drive is just fine. What should I try to do next? Side frustration: There is plenty of free hard drive space. The E: partition has 182 GB free.

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  • what does macosx-version-min imply?

    - by Quincy
    When I pass compiler flag "-mmacosx-version-min=10.5", what does it mean? I think it implies the result binary is x86, not ppc, but is it 32 bits or 64 bits? I'm compiling on snow leopard, so default output binary is 64 bits. I'm not passing -universal, it's not 32bit-64bit universal binary, I think.

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  • looser throw specifier for in C++

    - by ML
    I am getting an error that says: error: looser throw specifier for 'virtual CPLAT::CP_Window::~CP_Window()' On the destructor, I have never heard of this before and some Google Searches say this might be a GCC 4 problem, which I would not be sure how to work around since I need GCC 4 to build a Universal Binary. My Environment: OS X 10.6, XCode 3.2.2, GCC 4 to build a universal binary. What is the issue?

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  • Is it possible to make my iPhone app's icon look correct on both the iPad and iPhone?

    - by typewriter
    Our CEO wants our iPhone app's icons to look correct (ie not scaled) on both the iPad and iPhone. He does not want to actually create separate versions, or a universal version of the app. The app will remain iPhone only, but the icon would need to show up proper on both devices. This is a "business decision", and I think its rather silly but regardless - is this possible? OR would we have to create a universal version?

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  • How to obtain a random sub-datatable from another data table

    - by developerit
    Introduction In this article, I’ll show how to get a random subset of data from a DataTable. This is useful when you already have queries that are filtered correctly but returns all the rows. Analysis I came across this situation when I wanted to display a random tag cloud. I already had the query to get the keywords ordered by number of clicks and I wanted to created a tag cloud. Tags that are the most popular should have more chance to get picked and should be displayed larger than less popular ones. Implementation In this code snippet, there is everything you need. ' Min size, in pixel for the tag Private Const MIN_FONT_SIZE As Integer = 9 ' Max size, in pixel for the tag Private Const MAX_FONT_SIZE As Integer = 14 ' Basic function that retreives Tags from a DataBase Public Shared Function GetTags() As MediasTagsDataTable ' Simple call to the TableAdapter, to get the Tags ordered by number of clicks Dim dt As MediasTagsDataTable = taMediasTags.GetDataValide ' If the query returned no result, return an empty DataTable If dt Is Nothing OrElse dt.Rows.Count < 1 Then Return New MediasTagsDataTable End If ' Set the font-size of the group of data ' We are dividing our results into sub set, according to their number of clicks ' Example: 10 results -> [0,2] will get font size 9, [3,5] will get font size 10, [6,8] wil get 11, ... ' This is the number of elements in one group Dim groupLenth As Integer = CType(Math.Floor(dt.Rows.Count / (MAX_FONT_SIZE - MIN_FONT_SIZE)), Integer) ' Counter of elements in the same group Dim counter As Integer = 0 ' Counter of groups Dim groupCounter As Integer = 0 ' Loop througt the list For Each row As MediasTagsRow In dt ' Set the font-size in a custom column row.c_FontSize = MIN_FONT_SIZE + groupCounter ' Increment the counter counter += 1 ' If the group counter is less than the counter If groupLenth <= counter Then ' Start a new group counter = 0 groupCounter += 1 End If Next ' Return the new DataTable with font-size Return dt End Function ' Function that generate the random sub set Public Shared Function GetRandomSampleTags(ByVal KeyCount As Integer) As MediasTagsDataTable ' Get the data Dim dt As MediasTagsDataTable = GetTags() ' Create a new DataTable that will contains the random set Dim rep As MediasTagsDataTable = New MediasTagsDataTable ' Count the number of row in the new DataTable Dim count As Integer = 0 ' Random number generator Dim rand As New Random() While count < KeyCount Randomize() ' Pick a random row Dim r As Integer = rand.Next(0, dt.Rows.Count - 1) Dim tmpRow As MediasTagsRow = dt(r) ' Import it into the new DataTable rep.ImportRow(tmpRow) ' Remove it from the old one, to be sure not to pick it again dt.Rows.RemoveAt(r) ' Increment the counter count += 1 End While ' Return the new sub set Return rep End Function Pro’s This method is good because it doesn’t require much work to get it work fast. It is a good concept when you are working with small tables, let says less than 100 records. Con’s If you have more than 100 records, out of memory exception may occur since we are coping and duplicating rows. I would consider using a stored procedure instead.

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  • Problems with making a bootable USB Drive on a Mac

    - by Jason
    I am following this http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx to create a Bootable USB Drive for me Mac and this is the output I get on step 8. new-host:~ Jason$ sudo dd if=/Users/Jason/Desktop/ubuntu-12.04-desktop-amd64.dmg of=/dev/rdisk1s2 bs=1m dd: /dev/rdisk1s2: Invalid argument 691+1 records in 691+0 records out 724566016 bytes transferred in 164.544659 secs (4403461 bytes/sec) What should I do?

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  • Working with EO composition associations via ADF BC SDO web services

    - by Chris Muir
    ADF Business Components support the ability to publish the underlying Application Modules (AMs) and View Objects (VOs) as web services through Service Data Objects (SDOs).  This blog post looks at a minor challenge to overcome when using SDOs and Entity Objects (EOs) that use a composition association. Using the default ADF BC EO association behaviour ADF BC components allow you to work with VOs that are based on EOs that are a part of a parent-child composition association.  A composition association enforces that you cannot create records for the child outside the context of the parent.  As example when creating invoice-lines you want to enforce the individual lines have a relating parent invoice record, it just simply doesn't make sense to save invoice-lines without their parent invoice record. In the following screenshot using the ADF BC Tester it demonstrates the correct way to create a child Employees record as part of a composition association with Departments: And the following screenshot shows you the wrong way to create an Employee record: Note the error which is enforced by the composition association: (oracle.jbo.InvalidOwnerException) JBO-25030: Detail entity Employees with row key null cannot find or invalidate its owning entity.  Working with composition associations via the SDO web services  Shay Shmeltzer recently recorded a good video which demonstrates how to expose your ADF Business Components through the SDO interface. On exposing the VOs you get a choice of operation to publish including create, update, delete and more: For example through the SDO test interface we can see that the create operation will request the attributes for the VO exposed, in this case EmployeesView1: In this specific case though, just like the ADF BC Tester, an attempt to create this record will fail with JBO-25030, the composition association is still enforced: The correct way to to do this is through the create operation on the DepartmentsView1 which also lets you create employees record in context of the parent, thus satisfying the composition association rule: Yet at issue here is the create operation will always create both the parent Departments and Employees records.  What do we do if we've already previously created the parent Departments records, and we just want to create additional Employees records for that Department?  The create method of the EmployeeView1 as we saw previously doesn't allow us to do that, the JBO-3050 error will be raised. The solution is the "merge" operation on the parent Departments record: In this case for the Departments record you just need to supply the DepartmentId of the Department you want the Employees record to be associated with, as well as the new Employees record.  When invoked only the Employees record is created, and the supply of the DepartmentId of the Departments record satisfies the composition association without actually creating or updating the associated Department record that already exists in the database. Be warned however if you supply any more attributes for the Department record, it will result in a merge (update) of the associated Departments record too. 

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  • Prioritize webhost for a domain?

    - by Abhishek Bhatia
    I have a sub domain( I do not own the domain) but using Cpanel I am able to set A,NS,Cname records for a sub domain. What I want to do is to associate the subdomain with two webhost and prioritize them so that if the one with higher priority is down then the second webhost is used instead. Now I have alreaady set the NS records for both webhosts to the sub domain but I do not know if there exists a priority. How do accompolish this task if it is possible?

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  • What are the algorithms that are used for working with large data in popular web applications

    - by Moss Farmer
    I am looking for some well known algorithms that can be considered while handling very large amount of data.(Edit- By large amount of data I refer to records in a database excluding blobs). These algorithms if not in totality but in parts may be used in big web applications like Twitter, Last.fm , Amazon ,etc. Specifically, I'm looking for names or links to such algorithms. My primary interest lies in developing a very deep understanding on working with large database records and writing efficient code for working with the same.

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  • ASP.NET 4.0 and the Entity Framework 4 - Part 4 - A 3 Layered Approach to the Entity Framework

    In this article, Vince suggests a pattern to use when developing a three layered application using the Entity Framework 4. After providing a short introduction he demonstrates the creation of the database, data access layer, business logic layer, and a web form. He does so with the help of detailed explanations, source code examples and related screenshots. He also examines how to select records to load a Drop Down List, including adding, editing and deleting records.

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  • creating a bootable USB stick on OS X

    - by Rob
    I'm trying to create a bootable USB stick on OS X using http://www.ubuntu.com/download/help/create-a-usb-stick-on-mac-osx When this finishes, I get a message in terminal saying "695+1 records in 695+1 records out 729067520 bytes transferred in 264.563662 secs (2755736 bytes/sec)" But a message pops up saying "The disk you inserted was not readable by this computer" Options are Initialize, Ignore or Eject. What am I doing wrong or omitting. (oh - complete novice)

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  • ASP.NET 4.0 and the Entity Framework 4 - Part 3 - Execute Stored Procedures Using the Entity Framewo

    In this article, Vince demonstrates the usage of the Entity Framework 4 to execute stored procedures to create, read, update, and delete records in the database created in Part 1. After a short introduction, he examines the creation of the stored procedures and Web Forms, addition of the Stored Procedures to the Entity Model including adding, updating, and deleting records. He also shows how to retrieve a single record from the database.

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  • Change Data Capture - SQL Server 2008

    Change Data Capture (CDC) records DML operations performed on SQL tables and makes records available with information regarding what changed and when the change happened in a simple way. Compare and sync databases with SQL Compare“SQL Compare is fast, extremely easy to use, full-featured and affordable. I wouldn't bother messing around with anything else.” Adam Machanic, SQL Server MVP. Download a 14-day free trial.

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  • Bad disk performance on HP DL360 with Smarty Array P400i RAID controller

    - by sarge
    I have a HP DL360 server with 4x 146GB SAS disks and a Smart Array P400i RAID controller with 256MB cache. The disks are in RAID 5 (3 disks + 1 hot spare). The server is running VMware ESX 3i. The disk write performance is really bad. Here are some numbers: ns1:~# hdparm -tT /dev/sda /dev/sda: Timing cached reads: 3364 MB in 2.00 seconds = 1685.69 MB/sec Timing buffered disk reads: 18 MB in 3.79 seconds = 4.75 MB/sec ns1:~# time sh -c "dd if=/dev/zero of=ddfile bs=8k count=125000 && sync" 125000+0 records in 125000+0 records out 1024000000 bytes (1.0 GB) copied, 282.307 s, 3.6 MB/s real 4m52.003s user 0m2.160s sys 3m10.796s Compared to another server those number are terrible: Dell R200, 2x 500GB SATA disks, PERC raid controller (disks are mirrored). web4:~# hdparm -tT /dev/sda /dev/sda: Timing cached reads: 6584 MB in 2.00 seconds = 3297.79 MB/sec Timing buffered disk reads: 316 MB in 3.02 seconds = 104.79 MB/sec web4:~# time sh -c "dd if=/dev/zero of=ddfile bs=8k count=125000 && sync" 125000+0 records in 125000+0 records out 1024000000 bytes (1.0 GB) copied, 35.2919 s, 29.0 MB/s real 0m36.570s user 0m0.476s sys 0m32.298s The server isn't very loaded and the VMware Infrastructure Client performance monitor is showing 550KBps average read and 1208KBps average write for the last 30 minutes (highest write rate: 6.6MBps). This has been a problem from the start. Any ideas?

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  • SBS 2008 BPA Warnings After Migration From SBS 2003

    - by Nicholas Piasecki
    We just finished a we-know-just-enough-to-be-dangerous migration from SBS 2003 to SBS 2008, and things seem to have gone relatively smoothly. After running the SBS 2008 Best Practices Analyzer on the destination server, we've got three warning messages, and I can't tell if they're important or not. First, the easy one: SMTP Port (TCP 25 Status): The Edgetransport.exe process should listen on SMTP port 25, but that port is owned by the process. I don't think that this one is a big deal--e-mail is flowing through the SMTP connector. Since there are two spaces between "the" and "process," I'm assuming that for some reason BPA just couldn't figure out the owning process name and this is just some sloppy programming when displaying the message. (Indeed, on subsequent runs of the BPA this message goes away, and other times it comes back.) Now, two more scary sounding ones: No DNS name server records: There are no DNS name server (NS) resource records in the _msdcs sub-domain in the forward lookup zone for Windows SBS 2008. and, similarly, No DNS name server records: There are no DNS name server (NS) resource records in the _msdcs zone for Windows SBS 2008. Now for these two, everything appears to be functioning correctly--but I'm assuming this is a weird state as a result of the SBS 2003 to 2008 migration. Can anyone provide any pointers on how to fix it, or whether or not it can be safely ignored? Thanks!

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  • Openfiler iSCSI performance

    - by Justin
    Hoping someone can point me in the right direction with some iSCSI performance issues I'm having. I'm running Openfiler 2.99 on an older ProLiant DL360 G5. Dual Xeon processor, 6GB ECC RAM, Intel Gigabit Server NIC, SAS controller with and 3 10K SAS drives in a RAID 5. When I run a simple write test from the box directly the performance is very good: [root@localhost ~]# dd if=/dev/zero of=tmpfile bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 4.64468 s, 226 MB/s So I created a LUN, attached it to another box I have running ESXi 5.1 (Core i7 2600k, 16GB RAM, Intel Gigabit Server NIC) and created a new datastore. Once I created the datastore I was able to create and start a VM running CentOS with 2GB of RAM and 16GB of disk space. The OS installed fine and I'm able to use it but when I ran the same test inside the VM I get dramatically different results: [root@localhost ~]# dd if=/dev/zero of=tmpfile bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 26.8786 s, 39.0 MB/s [root@localhost ~]# Both servers have brand new Intel Server NIC's and I have Jumbo Frames enabled on the switch, the openfiler box as well as the VMKernel adapter on the ESXi box. I can confirm this is set up properly by using the vmkping command from the ESXi host: ~ # vmkping 10.0.0.1 -s 9000 PING 10.0.0.1 (10.0.0.1): 9000 data bytes 9008 bytes from 10.0.0.1: icmp_seq=0 ttl=64 time=0.533 ms 9008 bytes from 10.0.0.1: icmp_seq=1 ttl=64 time=0.736 ms 9008 bytes from 10.0.0.1: icmp_seq=2 ttl=64 time=0.570 ms The only thing I haven't tried as far as networking goes is bonding two interfaces together. I'm open to trying that down the road but for now I am trying to keep things simple. I know this is a pretty modest setup and I'm not expecting top notch performance but I would like to see 90-100MB/s. Any ideas?

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  • Dell PE2950 - slow IO rates for writing and reading locally

    - by OrenM
    I'm having a serious issue with dell server PE2950. The server has really slow IO rates, so slow that I'm not able to use it anymore I tried few things to solve this: changing disks to new disks (configured them as raid1) changing perc card + perc cables reinstalling the OS of course, had to cause of changing of disks, centos 5.5 x64bit firmware update to everything virtual disks policy: No Read Ahead,Write Back, disk cache policy disabled. openmanage doesn't alert about anything, also i ran dell's diag tests, everything passed, also dell didn't see anything in deset log. dell offered to reseat everything, including the cpu, we did that as well, still io rates are slow I have several PE2950 servers, and I never had such a thing with any of those. All have similar or exact hardware as this one, all configured the same, with the same os centos 5.5 x64, same disks, same raid, same policy. Just for comparison: the problematic PE2950 server: [root@bad ~]# time sh -c "dd if=/dev/zero of=/tmp/ddfile bs=8k count=200000 && sync" 200000+0 records in 200000+0 records out 1638400000 bytes (1.6 GB) copied, 27.7946 seconds, 58.9 MB/s real 0m33.968s user 0m0.531s sys 0m26.000s good PE2950 server (with the exact same hardware): [root@good ~]# time sh -c "dd if=/dev/zero of=/tmp/ddfile bs=8k count=200000 && sync" 200000+0 records in 200000+0 records out 1638400000 bytes (1.6 GB) copied, 3.19999 seconds, 512 MB/s real 0m7.694s user 0m0.053s sys 0m4.057s Hopefully you will have an idea what can cause the problem.

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  • When pointing to new DNS servers is there any chance of E-mails being lost if the old E-mail hosting service is still up?

    - by LaserBeak
    I am changing webhosts and will be using the new hosts mail servers instead of the old ones. I have created all the correctly named mailboxes on the new service but have also not yet cut ties with the old webhost. I am expecting that even if the new DNS values which point to the new hosts DNS servers and respective SOA\zone file with the new MX values have not yet propagated and an E-mail is directed at the old hosts mail servers as per the mx records in the SOA\zone records which the old hosting provider holds, the E-mail would still come through to the mailbox that's on the old host providers mail servers. So I am just trying to reaffirm if I got this right and it's essentially impossible for me to loose an E-mail since it will hit either the old hosts mail servers or the new ones ? Also is it possible to configure the same E-mail account to check and collect mail from different mail servers by entering multiple pop3 addresses ? And if I choose to keep the old web hosts mail hosting services as a backup by specifying the mx records for it with a lower priority in the SOA records hosted by the new webhost, is it possible to have any incoming E-mails sent to both servers by the mail daemon so I have two copies? Or is my only option having the primary mail server forward the E-mail somehow to the old mailserver ?

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  • dd oflag=direct 5x fast

    - by César
    I have Centos 6.2 in server with this specs: 2xCPU 16 Core AMD Opteron 6282 SE 64GB RAM Raid controller H700 1GB cache NV - 2HD 74GB SAS 15Krpm RAID1 stripe 16k (OS Centos 6.2) sda - 4HD 146GB SAS 15Krpm RAID10 stripe 16k (ext4 bs 4096, no barriers) sdb -> /vol01 Raid controller H800 1GB cache nv - MD1200 12HD 300GB SAS 15Krpm RAID10 stripe 256k (For DB Postgres 8.3.18) (ext4 bs 4096, stride 64, stripe-width 384, no barriers) sdc -> /vol02 I'm benchmarking IO speed with dd, and view thah if in RAID10 12 disk exec: dd if=/dev/zero of=DD bs=8M count=10000 oflag=direct 10000+0 records in 10000+0 records out 83886080000 bytes (84 GB) copied, 126,03 s, 666 MB/s but if I remove "oflag=direct" option obtain about 80 MB/s. In read benchmark, results are similar: dd of=/dev/null if=DD bs=8M count=10000 iflag=direct 10000+0 records in 10000+0 records out 83886080000 bytes (84 GB) copied, 79,5918 s, 1,1 GB/s If remove iflag=direct obtain 150MB/s... I don't understand this huge differences, on other machines y don't have this behavior. Can I have some kernel parameter misconfigured? Thanks!

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  • In spite of correct DNS, Exchange sending to wrong destination server for single outbound domain

    - by beporter
    My company uses an SBS 2003 server and makes use of Exchange to host our own email. We also have a linux server hosting domains for some of our clients. In order for us to send to those clients, we had internal DNS set up to shadow the client domains to provide "correct" MX records inside our network. For example, public DNS for a domain abc.com might point to 1.2.3.4, but internally we have MX records set up to route mail for abc.com to 172.16.0.4, which is the linux email server. This setup was entirely functional; this is just back story. We've recently moved one of our client domains from our internal linux server to an external email provider. When we did that, we naturally deleted our internal shadow DNS records so our Exchange server would fetch correct (public) DNS records and route mail out to the new external host. This has NOT had any effect on Exchange though. Even after rebooting the Exchange server and completely flushing the DNS cache (nslookups on the Exchange machine itself correctly resolve to the new external address) Exchange still attempts to deliver messages for the domain to our internal server! Exchange correctly routes to all other internal and external domains when sending email. Somehow Exchange is trying to deliver to a machine that by all accounts it has no business trying to use for just this one domain. Is there a DNS cache that Exchange uses internally? Is there a way to flush that internal cache? What else could I be missing?

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