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• Cannot Access Web Interface on HP 2510G

  - by Stephen

  I am currently setting up a new infrastructure with HP 2510s as edge switches and an HP E5406 as the main switch. I also have a DHCP and DNS server running on the same network. When i first set up one of my 2510 switches, I gave it a static IP through the console and then went to the web interface to continue my configuration. Later, I realized that I assigned it the wrong IP address, so i went through the web interface and changed the IP address to the correct one. Now, I can't access the web interface. I can telnet to the switch on the new IP address, but the web interface will not load. If I switch from static IP to DHCP, it loads the web interface. Any ideas on what could be causing the web server in the 2510 not to load with the new static IP address?

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• How to lookup an IP address in an Excel spreadsheet?

  - by Kevin Williams

  I am working with a decent sized spreadsheet of domains and server names. Another user of the spreadsheet needs the IP address for each of the DNS entries on the worksheet. Instead of manually adding and then having to maintain this list I was hoping there was an easy way to do an IPAddress lookup to display the IP address in a cell. I've seen some VBScripts that call gethostbyname, e.g.: Declare Function GetHostByName Lib "wsock32.dll" Alias "gethostbyname" (ByVal Host As String) As Long But I'm not a VB expert so I'm not sure if this is the right way to go. Any advice/links would be appreciated! also if this is a question better suited for Stack Overflow - let me know, I'm new here.

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• email handling with inbox.py and nginx

  - by Matt Ball

  I have a Flask web application running behind gunicorn and Nginx. Nginx proxies any traffic to ivrhub.org to the correct flask app. I would very much like to use inbox.py to process some incoming email. Running inbox.py's example on my server and then sending an email to [email protected] does not work as I intended. The inbox.py server does not seem to receive anything but the email also does not bounce. I'm missing something conceptually -- is there a DNS setting I need to configure or something I need to adjust with Nginx?

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• Primary domain controller has crashed, secondary does not log in

  - by Hosm

  Hi everybody, I had a primary domain controller on machine A and a secondary one on machine B in my AD domain. Due to some hardware/software problems, I decided to migrate the role of primary domain controller to machine B. Unfortunately, machine A has totally crashed and does not boot. Now I can not even log in to machine B (which itself was a controller in the domain). I need to log into machine B then choose it as the primary controller. I already have synced DNS and AD info. when machine A was alive. Anyone can provide an idea?

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• NUnit-console 2.5.4 not capable of running multiple assemblies?

  - by Per Salmi

  I am having problems running tests with the command line NUnit test runner. I am using version 2.5.4 with .NET 4 on an x64 machine. Using the following line results in a failure "Could not load file or assembly 'bar' or one of its dependencies. The system cannot find the file specified." nunit-console-x86 foo.dll bar.dll /framework=4.0.30319 If I reverse the dll file names it complains about not finding 'foo' instead... It works if I run them separately like: nunit-console-x86 foo.dll /framework=4.0.30319 Also the tests of the second file works if I run: nunit-console-x86 bar.dll /framework=4.0.30319 Before upgrading our projects to 4.0 we used NUnit 2.5.2 and the same command line tool options and at that point the runner worked well with multiple assemblies. It seems like the ability to run tests on multiple files at the same time is broken... Anyone that can see the same behavior or does it work indicating that my environment is somehow broken? /Per

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• Refactoring a custom User model to user UserProfile: Should I create a custom UserManager or add use

  - by BryanWheelock

  I have been refactoring an app that had customized the standard User model from django.contrib.auth.models by creating a UserProfile and defining it with AUTH_PROFILE_MODULE. The problem is the attributes in UserProfile are used throughout the project to determine the User sees. I had been creating tests and putting in this type of statement repeatedly: user = User.objects.get(pk=1) user_profile = user.get_profile() if user_profile.karma > 10: do_some_stuff() This is tedious and I'm now wondering if I'm violating the DRY principle. Would it make more sense to create a custom UserManager that automatically loads the UserProfile data when the user is requested. I could even iterate over the UserProfile attributes and append them to the User model. This would save me having to update all the references to the custom model attributes that litter the code. Of course, I'd have to reverse to process for to allow the User and UserProfile models to be updated correctly. Which approach is more Django-esque?

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• Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?

  - by Chris S

  This is a Canonical Question about Fighting Spam. Also related: How to stop people from using my domain to send spam? There are so many techniques and so much to know about fighting SPAM. What widely used techniques and technologies are available to Administrator, Domain Owners, and End Users to help keep the junk out of our inboxes? We're looking for an answer that covers different tech from various angles. The accepted answer should include a variety of technologies (eg SPF/SenderID, DomainKeys/DKIM, Graylisting, DNS RBLs, Reputation Services, Filtering Software [SpamAssassin, etc]); best practices (eg mail on Port 25 should never be allowed to relay, Port 587 should be used; etc), terminology (eg, Open Relay, Backscatter, MSA/MTA/MUA, Spam/Ham), and possibly other techniques.

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• Combinatorics, probability, dice

  - by TarGz

  A friend of mine asked: if I have two dice and I throw both of them, what is the most frequent sum (of the two dice' numbers)? I wrote a small script: from random import randrange d = dict((i, 0) for i in range(2, 13)) for i in xrange(100000): d[randrange(1, 7) + randrange(1, 7)] += 1 print d Which prints: 2: 2770, 3: 5547, 4: 8379, 5: 10972, 6: 13911, 7: 16610, 8: 14010, 9: 11138, 10: 8372, 11: 5545, 12: 2746 The question I have, why is 11 more frequent than 12? In both cases there is only one way (or two, if you count reverse too) how to get such sum (5 + 6, 6 + 6), so I expected the same probability..?

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• Juniper Networks SRX240 as a office router?

  - by Jordan Mendelson

  We're a small (7 person) fast growing startup who just got our new office and we're having a 100 Mbps line installed from Cogent. I'm not familiar with Juniper devices, however the equivalent Cisco appears to be rather expensive. Features we'd like: Offsite VPN access (PPTP or L2TP IPsec) - something Mac compatible IPv6 support NAT - ideally supporting multiple outside addresses mapped to VLANs DHCP DNS forwarding would be nice QoS to keep our SIP phones happy (managed through RingCentral) VLANs for guest/internal The device is going to be connected to a set of SIP phones as well as two Ruckus 7962s for wireless access. Eventually I'd like to connect it to a Juniper ESX switch as we grow. Would a Juniper SRX240 handle this ok?

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• What does your ~/.gitconfig contain?

  - by Rajkumar S

  Hi, I am looking to pimp up my ~/.gitconfig to make it really beautiful and take maximum advantage of capabilities git can offer. My current ~/.gitconfig is below, what more would you add? Have some nice ~/.gitconfig you want to share? Any recommendations for merge and diff tools in linux? Post away and let's build a nice ~/.gitconfig [user] name = Rajkumar email = [email protected] [color] diff = auto status = auto branch = auto interactive = auto ui = true pager = true [color "branch"] current = yellow reverse local = yellow remote = green [color "diff"] meta = yellow bold frag = magenta bold old = red bold new = green bold [color "status"] added = yellow changed = green untracked = cyan [core] pager = less -FRSX whitespace=fix,-indent-with-non-tab,trailing-space,cr-at-eol [alias] co = checkout Thanks! raj

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• Amazon EC2: Not able to open web application even if port it opened

  - by learner

  I have a t1.micro instance with public dns looks similar to ec2-184-72-67-202.compute-1.amazonaws.com (some numbers changed) On this machine, I am running a django app $ sudo python manage.py runserver --settings=vlists.settings.dev Validating models... 0 errors found Django version 1.4.1, using settings 'vlists.settings.dev' Development server is running at http://127.0.0.1:8000/ I have opened the port 8000 through AWS console Now when I hit the following in Chrome http://ec2-184-72-67-202.compute-1.amazonaws.com:8000, I get Oops! Google Chrome could not connect to WHat is that I am doing wrong?

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• Windows Deployment Services

  - by timbrigham

  I have a slightly advanced Windows Deployment Services setup. My router hands out DHCP addresses, including the following config. ip dhcp pool Servers_100 network 192.168.100.0 255.255.255.0 bootfile boot\\x86\\pxelinux.0 next-server 192.168.100.50 default-router 192.168.100.1 dns-server 192.168.100.80 192.168.100.81 This works perfectly for other subnets - I have a couple screens in my pxelinux that allow me to select my various Linux installers or enter the windows preboot environment. For some reason I'm only receiving the default bootfile that opens to the windows preboot environment. Any idea why?

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• hMailServer Email + MX Records Configuration

  - by asn187

  Trying to make DNS changes to enable email to be sent using hMailServer. My mail server is on a separate machine with a separate IP Address. I have already added MyDomain.com and an email account I have create a MX Record with the mail server being mail.domain.com an a priority on 20. 1) But the question is how do I now link this MX record for the domain to my mail server/ mail server IP Address? 2) What changes are needed in hMailServer to complete the process and be able to send emails for the domain? 3) In Settings SMTP Delivery of email: What should my configuration here look like?

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• Create Webmin user for an EC2 Instance

  - by Dean

  I've setup an Amazon EC2 Instance, using the Ubuntu 12.04 AMI (ubuntu/images/ebs/ubuntu-precise-12.04-amd64-server-20120424 (ami-a29943cb)), and I'd like to get Webmin working (so I can setup a DNS). After following the installation instructions on Webmin's site, the installer says I can login with any username/pass of a user who has superuser access. The problem is that the EC2 instance only has 1 user "ubuntu", which can only login using SSH keys -- not a password! I've tried creating users manually and I can't login as those users (even via SSH), so I think it might be a permission thing provided by the AMI. Does anyone know the best way around setting up a login to my webmin?

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• Windows 2008 RRAS and PPPoE

  - by Massimo

  I'm trying to use Windows Server 2008's Routing and Remote Access Server to share an ADSL connection which uses PPPoE, but I'm having no luck. I can setup the connection as a broadband Internet connection in Windows, and it works. I can share it using Internet Connection sharing, and it works (but it's not what I need). I have installed and enabled the Routing and Remote Access Service and configured it for NAT with a demand-dial interface; I create the aforementioned interface using PPPoE with the exact same parameters used on the Windows connection; I connected it, and it seems to work: I can also see it gets its public IP address and DNS assigned correctly. But it just doesn't work. The server has no Internet connectivity at all, and PINGing anything on the Internet results in a cryptic "general error". Any help?

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• iDrac6 Email Alert Problem

  - by theotherreceive

  I'm trying to setup the email alerts on the iDrac6 Express on an R610, but when i run the test it just says "Sending Failed". Platform Event Filter Alerts are enabled. The network setup is: 192.168.1.22/255.255.255.0 Gateway: 192.168.1.1 DNS: 192.168.1.1 SMTP: 192.168.1.1 Exim is listening 192.168.1.1 and is set to allow mail on 192.168/16. There's nothing in the exim logs about connections from the drac. Is there a way to get the drac to give more information about why it's sending failed?

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• Ubuntu VM Guest - Samba Service Not Accessible from VM Host via Hostname

  - by phalacee

  I have a Windows 7 Workstation with a Ubuntu 10.10 VM running in Virtual Box 3.2.12 r68302. I recently updated Samba and winbind, and since the update, I am unable to access the machine via it's hostname (\mystique) from the VM Host. I can access it by the "Host-only" IP (\192.168.56.101) and the DHCP Assigned IP address (\10.1.1.20) and I can connect to the webserver on the machine via it's hostname (http://mystique/). As stated, accessing this machine via it's hostname worked fine prior to the update, but has since stopped working. I have added the hostname to the smb.conf for the netbios name, to no avail. My smb.conf [global] section looks like this: workgroup = NETWORK netbios name = Mystique server string = %h server (Samba, Ubuntu) dns proxy = no log file = /var/log/samba/log.%m max log size = 1000 syslog = 0 panic action = /usr/share/samba/panic-action %d encrypt passwords = true passdb backend = tdbsam obey pam restrictions = yes unix password sync = yes passwd program = /usr/bin/passwd %u passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* . pam password change = yes map to guest = bad user usershare allow guests = yes

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• Mac Mini's internet very slow, every other device fine (PC, iPhone, Xbox 360)

  - by alex

  I recently haven't used my Mac Mini for about 5 days (however it was left on). I seem to be able to connect and get great download / upload speeds through my PC, Xbox 360, iPhone and parents' laptop. However, my Mac Mini is very slow. OS X's Mail.app is downloading mail at 0.4kbps and then dropping to 0. Skype file transfers are doing the same. Browsing the net is a terrible experience. It is taking 30 seconds or more to download basic pages. All of my devices connect wirelessly to a Netgear router / modem. I have tried giving the Mac Mini a manual IP, and renew DHCP lease, as well as flush DNS in Terminal. I have also rebooted the router / modem twice, and the Mac Mini twice. Do you know what could be causing this? Thanks

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• Socksify TCP connections reaching a gateway IP -- preferably without iptables

  - by Alexandra Neagu

  I have Virtualbox installed on Debian with a few virtual machines. I can't install anything in the guests, and I use host only networking, vboxnet0. The host IP in the host network is 192.168.56.1, and the guests have static IPs in 192.168.56.0/24. I access Internet with a SOCKS proxy (without authentication) and I would like the Virtualbox guests TCP connections to be sent through the SOCKS proxy. This would also be useful for socksifying external TCP reaching a gateway network card or wireless access point. I looked at transocks, tun2socks, with dante-client, etc., but I don't know how can I achieve this without enabling IP forwarding in the host and using iptables. Maybe to attach somehow the Virtualbox vboxnet0 network to the tunnel tun0 used by tun2socks? Or maybe there is a way to do NAT to tun0 in Virtualbox? I only need TCP traffic and I don't need UDP, not even for DNS.

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• Adding text over existing PDFs using reportlab

  - by Shane

  I'm interested in filling out existing PDF forms programatically. All I really need to do is pull information from user input and then place the appropriate text over an existing PDF in the appropriate locations. I can already do this with reportlab by feeding the same sheet of paper into a printer, twice, but this just really rubs me the wrong way. I'm tempted to just personally reverse engineer each existing PDF and draw every line and character myself before adding the user-inputted text, but I wanted to check to see if there was an easy way to take an existing PDF and set it as a background for some extra text. I'd really prefer to use python as it's the only language I feel comfortable with. I also realize that I could just scan the document itself and use the resulting raster image as a background, but I would prefer the precision of vector graphics. It seems like ReportLab has a commercial product with this functionality, and the specific function I'm looking for is in it (copyPages) - but it seems like overkill to pay for a 4 figure product for a single, simple function for a nonprofit use.

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• Apache httpd.conf handle multiple domains to run the same application

  - by John Stewart

  So what we are looking for is the ability to do the following: We have an application that can load certain settings based on the domain that it is being accessed from. So if you come from xyz.com we show a different logo and if you come from abc.com we show a different logo. The code is the same, running from same server just detects the domain on the run Now we want to get a dedicated server (any suggestions?) that will enable us to point all the doamins that we want to this server (we change the DNS for the domains to that of our server) and then when the user goes to a certain domain they run the same application. Now as far as I can understand we will need to create a "VirtualHost" in apache to handle this. Can we create a wildcard virtualhost that catches all the domains? I am not an expert with Apache at all. So please forgive if this comes out to be a silly question. Any detailed help would be great. Thanks

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• Remote Desktop to Virtual Machine

  - by Valvaris

  Hello: I recently reformatted one of my servers with Windows Server 2008 x64 and with that, installed the latest version of VMWare server on it. Within that, I created a new Windows Server 2003 R2 x86 virtual machine for the purposes of being a backup domain controller. I was able to successfully configure it as a domain controller and have it provide DNS service to my domain. I've been using the VMWare remote console to set this up and figured it was time to get remote desktop working. I set it up as I have with many other computers on my network (hitting the checkbox, making the firewall isn't blocking it) and I cannot get remote desktop to connect to it. I've tried using the computer name and its IP address neither work. I can ping the computer from the outside but the Virtual machine cannot ping anything from inside it. All machines are on the same subnet. I can't seem to figure this out.

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• gpupdate failing when using Samba 4 AD DC

  - by darthfoolish

  I have a Samba 4 AD domain running with 2 DCs on Centos 6.5, with a named DNS backend. I have multiple Windows 7 machines joined to this domain, which is fine. However, I can't get GPOs to apply. When running gpupdate, I get the following output The processing of Group Policy failed. Windows attempted to read the file \\sysvol\\Policies{31B2F340-016D-11D2-945F-00C04FB984F9}\gpt.ini Obviously, you don't normally see what it's trying to connect to when it's successful, but I would have thought the first place shows up, I should be seeing So, what governs what data gets put in between those angle brackets? If it is just supposed to be the domain, then what else could be going wrong? Thanks in advance for any help.

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• 401 Using Multiple Authentication methods IE 10 only

  - by jon3laze

  I am not sure if this is more of a coding issue or server setup issue so I've posted it on stackoverflow and here... On our production site we've run into an issue that is specific to Internet Explorer 10. I am using jQuery doing an ajax POST to a web service on the same domain and in IE10 I am getting a 401 response, IE9 works perfectly fine. I should mention that we have mirrored code in another area of our site and it works perfectly fine in IE10. The only difference between the two areas is that one is under a subdomain and the other is at the root level. www.my1stdomain.com vs. portal.my2nddomain.com The directory structure on the server for these are: \my1stdomain\webservice\name\service.aspx \portal\webservice\name\service.aspx Inside of the \portal\ and \my1stdomain\ folders I have a page that does an ajax call, both pages are identical. $.ajax({ type: 'POST', url: '/webservice/name/service.aspx/function', cache: false, contentType: 'application/json; charset=utf-8', dataType: 'json', data: '{ "json": "data" }', success: function() { }, error: function() { } }); I've verified permissions are the same on both folders on the server side. I've applied a workaround fix of placing the <meta http-equiv="X-UA-Compatible" value="IE=9"> to force compatibility view (putting IE into compatibility mode fixes the issue). This seems to be working in IE10 on Windows 7, however IE 10 on Windows 8 still sees the same issue. These pages are classic asp with the headers that are being included, also there are no other meta tags being used. The doctype is being specified as <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//" "http://www.w3.org/TR/html4/loose.dtd"> on the portal page and <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> on the main domain. UPDATE1 I used Microsoft Network Monitor 3.4 on the server to capture the request. I used the following filter to capture the 401: Property.HttpStatusCode.StringToNumber == 401 This was the response - Http: Response, HTTP/1.1, Status: Unauthorized, URL: /webservice/name/service.aspx/function Using Multiple Authetication Methods, see frame details ProtocolVersion: HTTP/1.1 StatusCode: 401, Unauthorized Reason: Unauthorized - ContentType: application/json; charset=utf-8 - MediaType: application/json; charset=utf-8 MainType: application/json charset: utf-8 Server: Microsoft-IIS/7.0 jsonerror: true - WWWAuthenticate: Negotiate - Authenticate: Negotiate WhiteSpace: AuthenticateData: Negotiate - WWWAuthenticate: NTLM - Authenticate: NTLM WhiteSpace: AuthenticateData: NTLM XPoweredBy: ASP.NET Date: Mon, 04 Mar 2013 21:13:39 GMT ContentLength: 105 HeaderEnd: CRLF - payload: HttpContentType = application/json; charset=utf-8 HTTPPayloadLine: {"Message":"Authentication failed.","StackTrace":null,"ExceptionType":"System.InvalidOperationException"} The thing here that really stands out is Unauthorized, URL: /webservice/name/service.aspx/function Using Multiple Authentication Methods With this I'm still confused as to why this only happens in IE10 if it's a permission/authentication issue. What was added to 10, or where should I be looking for the root cause of this? UPDATE2 Here are the headers from the client machine from fiddler (server information removed): Main SESSION STATE: Done. Request Entity Size: 64 bytes. Response Entity Size: 9 bytes. == FLAGS ================== BitFlags: [ServerPipeReused] 0x10 X-EGRESSPORT: 44537 X-RESPONSEBODYTRANSFERLENGTH: 9 X-CLIENTPORT: 44770 UI-COLOR: Green X-CLIENTIP: 127.0.0.1 UI-OLDCOLOR: WindowText UI-BOLD: user-marked X-SERVERSOCKET: REUSE ServerPipe#46 X-HOSTIP: ***.***.***.*** X-PROCESSINFO: iexplore:2644 == TIMING INFO ============ ClientConnected: 14:43:08.488 ClientBeginRequest: 14:43:08.488 GotRequestHeaders: 14:43:08.488 ClientDoneRequest: 14:43:08.488 Determine Gateway: 0ms DNS Lookup: 0ms TCP/IP Connect: 0ms HTTPS Handshake: 0ms ServerConnected: 14:40:28.943 FiddlerBeginRequest: 14:43:08.488 ServerGotRequest: 14:43:08.488 ServerBeginResponse: 14:43:08.592 GotResponseHeaders: 14:43:08.592 ServerDoneResponse: 14:43:08.592 ClientBeginResponse: 14:43:08.592 ClientDoneResponse: 14:43:08.592 Overall Elapsed: 0:00:00.104 The response was buffered before delivery to the client. == WININET CACHE INFO ============ This URL is not present in the WinINET cache. [Code: 2] Portal SESSION STATE: Done. Request Entity Size: 64 bytes. Response Entity Size: 105 bytes. == FLAGS ================== BitFlags: [ClientPipeReused, ServerPipeReused] 0x18 X-EGRESSPORT: 44444 X-RESPONSEBODYTRANSFERLENGTH: 105 X-CLIENTPORT: 44439 X-CLIENTIP: 127.0.0.1 X-SERVERSOCKET: REUSE ServerPipe#7 X-HOSTIP: ***.***.***.*** X-PROCESSINFO: iexplore:7132 == TIMING INFO ============ ClientConnected: 14:37:59.651 ClientBeginRequest: 14:38:01.397 GotRequestHeaders: 14:38:01.397 ClientDoneRequest: 14:38:01.397 Determine Gateway: 0ms DNS Lookup: 0ms TCP/IP Connect: 0ms HTTPS Handshake: 0ms ServerConnected: 14:37:57.880 FiddlerBeginRequest: 14:38:01.397 ServerGotRequest: 14:38:01.397 ServerBeginResponse: 14:38:01.464 GotResponseHeaders: 14:38:01.464 ServerDoneResponse: 14:38:01.464 ClientBeginResponse: 14:38:01.464 ClientDoneResponse: 14:38:01.464 Overall Elapsed: 0:00:00.067 The response was buffered before delivery to the client. == WININET CACHE INFO ============ This URL is not present in the WinINET cache. [Code: 2]

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• IIS SmtpSVC - Adding remote domains on the fly

  - by Andrej Pintar

  Since I am using SMTPSVC from IIS to send all mail out I have noticed some domains that reject mail regarding LFs and similar SMTP day to day basis problems. So I mostly re route these domains by using smarthosts. Now I aslo read that on IIS7 or most of them when you add a remote domain to domains you must restart SMTPSVC to take effect. I also enabled METABASE editing. So I also hoped that this will help me add remote domains on the fly. But it's not working. Should I use another SMTP: -hmailserver or similar to route DOMAINS by smarthost. We used a smarthost configuration before but ISP smarthost gets a lot on RBL Blacklist so mail comes back. Since DNS MX direct sending is more work because of troublesome domains now I got more work to monitor SMTP logs. Thank you in advance.

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