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• MIDI - Continous control of pitch outside the standard pitch bend range?

  - by user1423893

  After I send a note on message I can control the pitch of a note within a ±2 semitone range using the pitch bend channel command. How can I continuously update a pitch of a note outside of the normal pitch bend range without retriggering the note (i.e. sending another note on message with the new pitch?) In other words the current note is still sounding after a note on message and its envelope has not reached the end of its release stage. I would like to change the pitch outside the pitch bend range, preferably anywhere within the audible frequency range.

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• Windows Server 2008 constantly spamming external IP's on outbound TCP port 445

  - by RSXAdmin

  Hi Server Fault, I have a Windows Server 2008 box running as a Domain Controller. I have noticed in my Cisco ASA firewall logs that this box is continuously sending out (like a thousand requests a second) requests on TCP port 445 to external hosts. I have made an effort to deny this outbound traffic from getting on the internet (using the ASA), however I would like these requests to stop from even occurring at all. I have tried disabling TCP/IP over NetBIOS. I have even turned on Windows Advanced Firewall on the box itself to block outbound 445 but the ASA still detects this particular traffic hitting it. I have other DC's and similar type boxes which are not behaving the same way as this box. Is this normal? Is there a way to stop this spamming? Have I been infected? Thank you universe.

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• Why are some UDP packets getting blocked?

  - by Tom

  In our organization, we have two test machines running Windows XP. While attempting to test a roll-my-own UDP message server, I found that both could receive small messages (under 2k) just fine. However, when I test sending large packets to both of these machines, one receives them fine, while the other can't receive them at all. Both machines have SP3 and both have their Windows Firewall shut off, but one still isn't working. Can anyone tell me where to look for anything that might be blocking or limiting the packet size on a Windows Machine? Thanks.

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• If I don't want subdomains to send out email, do I need SPF records for them?

  - by Phil

  I have a main domain with (now) valid SPF record, but we also programmatically create lots and lots of subdomains for clients via cpanel PHPXML API. These subdomains are not intended to send any mail. When we create them, they are getting an A record of my ip, and a TXT record of "v=spf1 +a +mx +ip4:[MY IP] ?all". Those are all the DNS records they have Recently we have had a lot of email spoofing and realized there was an invalid (duplicate SPF) for our main domain. We just fixed that, but are unsure if: 1) Can spammers still spoof email from subdomains without MX records, with above current listed SPF? 2) Is it better to have no SPF for subdomains than the one I have listed? 3) Is there a way to prevent subdomains from sending/spoofing email via my main domain's SPF? Here is the main domain SPF that our host suggested we switch to: "v=spf1 a mx ptr a:dedrelay.[webhost].com include:dedrelay.[webhost].com ~all"

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• SBS2011 Detailed Network Report

  - by HaydnWVN

  I have configured an SBS2011 Server to e-mail me a weekly 'Detailed Network Report' (saw it while configuring a daily e-mailed Back Up report). Within the Report there is lots of info regarding all the Roles on the server (Security, Updates, Back Up etc). Under E-Mail Usage and Mailbox Sizes the following is shown: Now I know these users are sending much more than 1 e-mail a week! So what exactly is this report showing? E-mails within the last 24 hours? How do I go about configuring the Report to show me e-mail statistics for the last week/day/whatever?

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• switch OFF syn cookies

  - by Nick

  We have several servers they have public IP's, but work together (one is with Load Balancer, orther with Apache Web server, other with MySQL and so on. Most of the ports are fire-walled, so only "local" servers can be connect there. However ALL servers have some ports that must be publicly open. We have SYN Cookies enabled and from time to time we got: possible SYN flooding on port 8080. Sending cookies. Port 8080 is not public. How we can switch OFF SYN Cookies for some ports (e.g. 8080, 3306 etc) or from some sources (e.g. our servers), but in same time SYN Cookies to be switched ON for all other ports, e.g. port 80. We found this similar problem, except our servers are with public IP's: SYN cookies on internal machines

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• Using command line to connect to a wireless network with an http login

  - by Shane

  I'm trying to connect to a wifi network where it hijacks all requests and redirects you to a page where you have to agree to a terms of use before it lets you connect to the actual outside world. This is a pretty common practice, and usually doesn't pose much of a problem. However, I've got a computer running Ubuntu 9.10 server with no windowing system. How can I use the command line to agree to the terms of use? I don't have internet access on the computer to download packages via apt-get or anything like that. Sure, I can think of any number of workarounds, but I suspect there's an easy way to use wget or curl or something. Basically, I need a command line solution for sending an HTTP POST request essentially clicking on a button. For future reference, it'd be helpful to know how to send a POST request with, say, a username and password if I ever find myself in that situation in another hotel or airport.

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• Sharepoint Document Library not receiving emails

  - by ria

  I have created a sharepoint document library which is email enabled. However when i send email to the designated email address from anywhere, i dont receive the email & attachment in the list. I have done some R&D and i hv found that in order to receive email from anywhere i have to expose my DNS of the sharepoint site to the outside world. Now i dont know whether it applies to the email address designated to me in the Active directory profile as well (my company domain email address). How to test that this email reception is working in the document library? I have tried sending an email from the sharepoint site and it works fine so the SMTP settings are correctly done.

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• Exchange 2010 550 5.7.1 unable to relay

  - by isorfir

  I have a website application that needs to send email via our Exchange servers. It sends email internally fine, but when sending to an external address I get the 550 5.7.1 unable to relay error. I followed this guide to create a connector to allow relay. Unfortunately, all office email was trying to use that connector and was not being routed correctly. It also appeared as though it opened it up for spammers to use. This is obviously unacceptable and a secure method is needed.

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• In linux: how to exit a program but not kill it?

  - by biomed

  I use Ubuntu 10.10 and I have a python program (mnemosyne) that I synchronize the data files using dropbox. If I forget to close (exit) this program. Here is my problem scenario. I leave the program running at home and go to work but if I open the program at work and work on it the data file is changed and I loose my progress at home when I exit (it automatically saves) when exitimg. I thought I could create a cron job to automatically close mnemosyne every morning regardless os me remembering to do it or not but if I use kill the program exits without saving the datafile and I end up with a tmp file and an error message when I restart it. Is there a better way of sending the exit signal to this program emulating me clicking fileexit menu option. Thanks

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• Lotus notes 8.5 quota

  - by Cividan

  we're using lotus notes 8.5 and I have a user who was over his quota as he had sent 6 email with attachement over 800 MB (no comment...) I deleted these oversized email and empty the trash but domino keep sending email warning about quota. I checked in the all documents view and they are no longer there, I re-did an empty the trash. I saw a post on the internet saying to compact his database, when I go under file, application, properties and click on the info tab, I see that he use 35.7% of the 3 GB database. when I click on "compact" I see a message saying the compact of the database is beeing process... the message disapear after about 1 minutes the message disapear but nothing else seem to happen and when I look back later on the space problem has not changed. any advice would be appreciated.

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• Outlook can not recognize PDF v1.7 attachments - those become corrupted after receiving on linux client

  - by SkyRaT

  MS Outlook cannot recognize PDF format 1.7 when sending it as an attachment. Therefore it's sent as: Content-Type: application/pdf; Content-Transfer-Encoding: quoted-printable When receiving such an e-mail under Linux (Thunderbird), the PDF content is being parsed as a plain text and converted. This results in a corrupted file loosing all the bytes 0x0a (LF) which are being removed by the EOL conversion. It's definitely a problem of Outlook which is IMO hard to fix and deploy. Is there a way to fix that on Thunderbird's site?

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• Force snmptrapd to log only v2c traps

  - by dare2be

  Hello, I am in the middle of writing new network management software for my University. However, I need to implement a quickie solution to handle specific traps. Right now, my snmptrapd is configured to accept any traps, i.e.: # /etc/snmp/snmptrapd.conf authCommunity log publicString logOption f /var/log/snmptrapd.log format1 "" format2 "%02.2h:%02.2j %b %N\n" What I basically want to do is to log ONLY v2c traps. I intended to do it with setting the format for v1 traps to null (format 1 "") but snmptrapd keeps sending "" to its log. Does anybody know a workaround for this?

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• Nginx Tornado Combination Causing 502 Bad Gateway Errors

  - by PlaidFan

  We are facing a problem with inconsistent 502 errors and tracking down the reasons has been a very frustrating exercise. We can reproduce the problem by sending several simultaneous requests quickly. The problem is that several is only in the range of 10 to 20 within a 5 seconds (not a typo). So clearly this type of load should be handled easily. We really like the Nginx + Tornado approach but are considering going to a more traditional (e.g. threading) approach because this problem has been very difficult to solve. I was wondering if you a) know how to fix this issue and b) how we can tracked down the culprit(s). The log files simply identify there being a connection refused. We have the same problem as this post: How do I debug a HTTP 502 error? But there is no answer provided on how to solve the problem so I'm hoping you can help because this may be a common issue with this type of setup. Thanks in advance, Paul

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• Sendmail Undeliverable Redirection?

  - by Dizzle

  Good afternoon; I don't know much about sendmail, so this may be fairly easy for those of you more experienced with it. We have an account, "[email protected]", sending reports to various groups. From time to time an undeliverable message will be sent back to "[email protected]". We'd like for those undeliverable messages to be rerouted, or bounced, from "[email protected]" to a group of our choosing. To carve out a scenario for clarity: [email protected] sends a report to [email protected] and [email protected] [email protected] has someone who's mail account no longer exists, triggering an undeliverable message being sent back to [email protected] Rather than having the undeliverable message sit in [email protected]'s Inbox, we'd like for it to be automatically rerouted/bounced to an admin group, [email protected] So I guess a "rule" of sorts. I've come across this solution: Sendmail : ignore local delivery But I don't know enough about sendmail to know if this is what will fit this situation. Any help is greatly appreciated.

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• Force shutdown a pc stuck in updating via Team Viewer

  - by Martheen Cahya Paulo

  Before I left office, I shutdown my work computer, leaving it in "Please do not power off..." screen. Now, when I log on to my own computer, I saw in Team Viewer that it's on. I thought it restarted instead of shutting down, but when I connect to it, it's still stuck in the previous screen. I've tried sending Ctrl-Alt-Del, but it seems to ignore it. I could still change its resolution via Team Viewer, and the fact that it respond my connection means it's not completely stalled. Is there anyway to shutdown it via Team Viewer?

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• unexpected trash contents

  - by Foye Lowe

  As I was proceeding to empty the trash on this machine (Mac OS X version 10.6.3), a listing of thousands of items began accumulating. Trash itself shows some 237 items, many of them folders labeled as, for example "com.apple.AddressBook". I am certain that I did not send the bulk of these items to trash. Is it possible that one of the periodic Software Updates has eliminated files by sending them to Trash? Or have I picked up some malware which has sent important stuff to trash? Thanks.

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• MVC: returning multiple results on stream connection to implement HTML5 SSE

  - by eddo

  I am trying to set up a lightweight HTML5 Server-Sent Event implementation on my MVC 4 Web, without using one of the libraries available to implement sockets and similars. The lightweight approach I am trying is: Client side: EventSource (or jquery.eventsource for IE) Server side: long polling with AsynchController (sorry for dropping here the raw test code but just to give an idea) public class HTML5testAsyncController : AsyncController { private static int curIdx = 0; private static BlockingCollection<string> _data = new BlockingCollection<string>(); static HTML5testAsyncController() { addItems(10); } //adds some test messages static void addItems(int howMany) { _data.Add("started"); for (int i = 0; i < howMany; i++) { _data.Add("HTML5 item" + (curIdx++).ToString()); } _data.Add("ended"); } // here comes the async action, 'Simple' public void SimpleAsync() { AsyncManager.OutstandingOperations.Increment(); Task.Factory.StartNew(() => { var result = string.Empty; var sb = new StringBuilder(); string serializedObject = null; //wait up to 40 secs that a message arrives if (_data.TryTake(out result, TimeSpan.FromMilliseconds(40000))) { JavaScriptSerializer ser = new JavaScriptSerializer(); serializedObject = ser.Serialize(new { item = result, message = "MSG content" }); sb.AppendFormat("data: {0}\n\n", serializedObject); } AsyncManager.Parameters["serializedObject"] = serializedObject; AsyncManager.OutstandingOperations.Decrement(); }); } // callback which returns the results on the stream public ActionResult SimpleCompleted(string serializedObject) { ServerSentEventResult sar = new ServerSentEventResult(); sar.Content = () => { return serializedObject; }; return sar; } //pushes the data on the stream in a format conforming HTML5 SSE public class ServerSentEventResult : ActionResult { public ServerSentEventResult() { } public delegate string GetContent(); public GetContent Content { get; set; } public int Version { get; set; } public override void ExecuteResult(ControllerContext context) { if (context == null) { throw new ArgumentNullException("context"); } if (this.Content != null) { HttpResponseBase response = context.HttpContext.Response; // this is the content type required by chrome 6 for server sent events response.ContentType = "text/event-stream"; response.BufferOutput = false; // this is important because chrome fails with a "failed to load resource" error if the server attempts to put the char set after the content type response.Charset = null; string[] newStrings = context.HttpContext.Request.Headers.GetValues("Last-Event-ID"); if (newStrings == null || newStrings[0] != this.Version.ToString()) { string value = this.Content(); response.Write(string.Format("data:{0}\n\n", value)); //response.Write(string.Format("id:{0}\n", this.Version)); } else { response.Write(""); } } } } } The problem is on the server side as there is still a big gap between the expected result and what's actually going on. Expected result: EventSource opens a stream connection to the server, the server keeps it open for a safe time (say, 2 minutes) so that I am protected from thread leaking from dead clients, as new message events are received by the server (and enqueued to a thread safe collection such as BlockingCollection) they are pushed in the open stream to the client: message 1 received at T+0ms, pushed to the client at T+x message 2 received at T+200ms, pushed to the client at T+x+200ms Actual behaviour: EventSource opens a stream connection to the server, the server keeps it open until a message event arrives (thanks to long polling) once a message is received, MVC pushes the message and closes the connection. EventSource has to reopen the connection and this happens after a couple of seconds. message 1 received at T+0ms, pushed to the client at T+x message 2 received at T+200ms, pushed to the client at T+x+3200ms This is not OK as it defeats the purpose of using SSE as the clients start again reconnecting as in normal polling and message delivery gets delayed. Now, the question: is there a native way to keep the connection open after sending the first message and sending further messages on the same connection?

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• virtual hosts on lighttpd can't load

  - by Jake

  Thats what I did: Added following code to lighttpd.conf $HTTP["host"] =~ "(^|\.)test\.com$" { server.document-root = "/home/test" } created /home/test Restarted Lighttpd but it doesn't load anything Google chrome Error: No data received Unable to load the webpage because the server sent no data. Here are some suggestions: Reload this webpage later. Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data. Firefox: The connection was reset The connection to the server was reset while the page was loading. The site could be temporarily unavailable or too busy. Try again in a few moments. If you are unable to load any pages, check your computer's network connection. If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web. can you please explain How can I fix this? Really Thanks

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• Set Thunderbird "from" address by incoming "to" address

  - by user293698

  I have configured my email server to cache all email to my mailbox. So [email protected] and [email protected] go to one mailbox. Every forum, registration, and guy get their own address for sending me emails so I can deliver it to /dev/null if anyone start spamming. That's the working setup. Now the problem: If I reply to a message, then Thunderbird always sets my default Identity as sender. I know I can add additional identities, but I don't want to add every address. How can I configure when a email is sent to [email protected], I answer with [email protected].

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• Receiving faxes on printer even while computer is shut down?

  - by Supporter13

  I normally send faxes with a very old fax machine and I was thinking it takes so much time for every fax to be scanned for all the numbers so I would like to send faxes with a printer. I already have an all-in-one printer, it can scan and print, but I have the document I want to fax on my computer already, so there is no need to scan. Now, the question is if I buy a fax capable printer, will it receive my faxes even when the computer is shut down or do I need to keep the computer on? What I really want is a way to send a lot of faxes to a lot of numbers as fast as possible (the document already in the computer through scan or sending) to be able to receive the fax in my computer (even while off) so I can print it with my printer If both are possible then what requirements do I need? Also, I could not find any info on the internet about receiving faxes on the computer.

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• Rate of UDP packet loss over WLAN

  - by Martin

  While testing something with TFTP I noticed lots of timeouts (and slow speed as result) when I used my WLAN - and no problems when using a network cable. A quick test program sending/receiving UDP revealed that there are about 3-5% packets lost. While it's obvious that WLAN has to be less reliable than LAN, I have no knowledge what loss rates are considered 'normal' - and when there is a need to further investigate the network infrastructure. Are there 'typical' packet loss rates on WLAN (and other network technologies e.g. PowerLAN, WAN, ...? Thanks

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• Windows 7 Desktop as Bluetooth Mixer

  - by J.R. Lillard

  I would like to stream all the audio from my Droid X2 to my desktop running Windows 7 via bluetooth. When I pair the two devices I can make this work but the audio plays through the internal speakers. I am actually wanting to listen to everything through a pair of bluetooth headphones. The end result would be that I could listen to music from my phone but easily pause it to listen to audio from the desktop instead. So far I have not had any luck. I thought about connecting the line out to the line in so I could monitor the line in from my headphones. My current setup is wiring the phone to the line in and then monitoring the line in through the headphones. I'm just wanting to eliminate the wire and go wireless the whole way. Is there something in Windows that prevents it from taking an inbound audio stream and sending it out another device?

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• How can I get a notification from my server if the mail queue stops

  - by Ash

  I am using QMail with Plesk 10 on an Apache server. Occasionally the mail queue stops processing emails - this most recently happenend when an email account got hacked and started sending hundreds of emails. We did not find out about this until a client of ours contacted to say that their emails were not being recieved, so we checked the mail queue and lo and behold the service had stopped. In future I would like to be notified when the mailqueue stops. How can I set something up so the server will run a command whenever the mailqueue stops?

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• Using rsyslog to create different log files for different processes

  - by user80203

  Scenario: I am running a cluster of machines. Each machine runs various python programs with a unique (across the cluster), but dynamically set, ID. Right now, they are all logging locally. So, I might have logs that look like: process_5.log process_6.log for processes that had ID's 5 and 6. Another machine may have: process_20.log process_25.log I wish to forward these logs to a logserver running rsyslogd. Python's logging facility has a nice syslog handler, so I understand how I could connect to the remote server. What I haven't figured out is how to use templating/DynFile to maintain log separation. e.g. on the logserver, I will want to see: process_5.log process_6.log process_20.log process_25.log which correspond to the logs of the same name on the sending machine. Is there a way to pull this off with rsyslogd templating?

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