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• Postfix sending mail back to itself? (Ubuntu 9.10)

  - by webo

  I setup Dovecot and Postfix using the "Dovecot-Postfix" package with SASL and all that. The Dovecot part seems to be working fine but I'm having issues with Postfix. Whenever I send a message to another address through the postfix server, two things happen. the message never gets to the other address (even when I request a delivery notification, it says that it's been delivered but it's not in the spam box in the other inbox or anything) The message comes back to my inbox through Dovecot as though I sent it to myself internally. e.g. I send an email through my postfix server to my gmail account, 10 minutes later nothing shows up in my gmail account but the message comes back to me as though I was sending it to my internal address (with no errors) Any ideas?

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• Accesing internet with Host-Only network VirtualBox

  - by Bibo

  I have two VMs in my VirtualBox. Both are FreeBSD and should communicate between each other. I have created network with DHCP enabled and set like this: Server Address 10.10.10.1 Server Mask 255.255.255.0 Lower Address Bound 10.10.10.100 Upper Address Bound 10.10.10.200 My VMs are pinging each other and getting right ip adress. This is what I must have and can´t change. Now I want to access internet from one VM and I found that I must use two network cards but I don´t know how to set the second one. I am new with VirtualBox and this stuff so if you count with this in you answer I would appreciate that. And I have Windows 8 as host system if it´s matter.

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• How to access an node of an LAN via WAN?

  - by gilzero

  Lets say I have a router that is connected to the Internet. An WAN IP address is given by ISP. It is using PPPoE ADSL, the IP address is not static, every time it connected, assigned a different IP address. There is an web server 192.168.0.100 running in the LAN. I heard something like DMZ + DynDNS can do the job? But not sure what these are and how they work. Any there way(s) to access the local node 192.168.0.100 via WAN, so that I can reach that node even I am not home. Thanks for any advice.

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• Windows Physical Direct Memory Mapping

  - by chrisjleaf

  I'm a bit disappointed there is almost no discussion of this no matter where I look so I guess I'll have to ask. I'm writing a cross platform memory bench marking application which requires direct physical address mapping rather than virtual addressing. EDIT The solution would look something like the Linux/Unix system calls: int fd = open("/dev/mem", O_RDONLY); mmap(NULL, len, PROT_READ, MAP_SHARED, fd, PHYSICAL_ADDRESS_OFFSET); which will require the kernel to either give you a virtual page mapping to the desired physical address or return that it failed. This does require supervisor privileges but that is ok. I have seen a lot of information about shared memory and memory mapped files but all of these reside on disc and are thus not really useful when I'm trying to make a system dependent read. It is very similar to writing an IO driver although I do no need write permissions to the physical address. This site gives an example of how to do it on a driver level using the Windows Driver Kit: NT Insider: Sharing Memory between drivers and applications This solution would probably require Visual Studio which currently I do not have access to. (I have downloaded the WDK api but it complained about my use of GCC for Windows). I'm traditionally a Linux programmer so I'm hoping there might be something really simple I'm missing. Thanks in advance if you know something I don't!

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• How do I create email addresses for all my users using my domain ([email protected])?

  - by user33012

  My client wants to create email addresses for all their dotnetnuke users using their domain. The point is to keep the user's email addresses 'private' while still allowing communication through a public email address that they can control. It's not necessary to have a full webmail interface (although that would be nice). I'm thinking it would be enough just to forward any mail on and just act as a gateway. So if an email was sent to [email protected], it would be forwarded on to the email address associated with the dotnetnuke account with username 'rwain'. Is this possible to do in a shared hosting environment? Or do I need to create some custom mail server that does a conversion of the email address and forwards it?

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• DHCP and Reservations in windows server 2k3!!

  - by Fri13th

  Hello everybody! I have a problem with Configuring DHCP Reservations: in the client, ipconfig: Address Leases is: 192.168.188.20 http:/i160.photobucket.com/albums/t171/dungttvn/123.png then in the client computer: ipconfig /release but when i config the Reservations with the fix IP address is: 192.168.188.100 in the sever computer (throught vmnet1) and in the client computer: ipconfig /renew ... it's not work: the address lease is still 192.168.188.20 always! http:/i160.photobucket.com/albums/t171/dungttvn/456.png Someone help me! =.= Many Thanks!

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• DNS Help: Move domain, not mailserver

  - by Preserved

  I'm in the middle of launching a new website for an already-in-use domain. The domain has a complicated email system so we'd like to move that over to the new server a bit later on. Currently the domain DNS is managed by the current webhost. I plan on moving the DNS management back to Network Solutions, then point the A record to the new website's IP. However, currently the DNS has the MX record the same as the A record. When NetworkSolutions is managing the DNS, and I point the A record to the new IP, then the MX record can't be the A record.. Right now: A Record mydomain.com points to IP address 198.198.198.198 MX record mydomain.com points to IP address 198.198.198.198 What I want: A Record mydomain.com points to IP address of new server MX record somehow points to current existing mailserver Does this even make sense?

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• How to reach a Global Scope IPv6 host?

  - by Vaibhav Bajpai

  I have setup DNS64+NAT64 on a machine with 2 interfaces: eth0: public IPv4 address (connected to outside world) eth1: global scope IPv6 address: 2001::/64 I can successfully use ping6 google.com on this machine. Now I want to connect my MacBook to this machine by making it an IPv6-only client and perform some tests, but I do not have an IPv6 address assigned on this MacBook. I'm wondering, how should I manually assign one so as to route all my IPv6 traffic (I will disable IPv4 on my MacBook) to this machine, which will be picked up by DNS64+NAT64 to be converted to IPv4 requests and sent to the outside world?

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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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• how to set up domain name, bad request invalid hostname

  - by user45645

  assume i have a domain name which will be forwarded to my public ip (web server) automatically. in IIS 6, ip is public ip port is 6666, advanced - host value is www.hello.com firewall is open for 6666(web server port) and 53(DNS port), DMZ of router is my physical address in DNS, i have already had a zone called oldhello.com. And i expect a new domain name. So i have addded a new zone called hello.com and checked SOA server (P) is one.hello.local. then added a new host called one, full name is one.hello.com, ip address 192.168.7.3(my address in router) and then add a alias(CNAME) www, full name is www.hello.com, FQDN i choose the host i added before (one.hello.com) i expected that when i type the public ip in browser, can it be changed to domain name automatically. if not set host value www.hello.com, use public ip i can see the web however, after set up host value www.hello.com, browser show bad request invalid hostname

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• Running Outlook from VB with multiple email addresses [migrated]

  - by Mac

  I am sending emails from my VB6 system and I am having problems with sending a single email to various email addresses. The code is as follows: On Error Resume Next Err.Clear Set oOutLookObject = CreateObject("Outlook.Application") If Err <> 0 Then MsgBox "Email error. Err = " & Err & " Description = " & Err.Description EmailValid = "N" Exit Function End If Set oEmailItem = oOutLookObject.CreateItem(0) If Err <> 0 Then MsgBox "Email error. Err = " & Err & " Description = " & Err.Description EmailValid = "N" Exit Function End If With oEmailItem .Recipients.Add (SMRecipients) .Subject = SMSubject .Importance = IMPORTANCENORMAL .Body = SMBody For i = 1 To 10 If RTrim(SMAttach(i)) <> "" Then .attachments.Add SMAttach(1) 'i) Else Exit For End If Next i .send End With If Err <> 0 Then MsgBox "Email error. Err = " & Err & " Description = " & Err.Description EmailValid = "N" Exit Function End If ''' .Attachments.Add ("c:\temp\test2.txt") Set oOutLookObject = Nothing I have set SMRecipients to a single email address and it is fine but when I add more addresses seperated by semicolons or spaces it only sends to the original address. My system runs under XP. Another point is that it use to find the addresses in the Outlook Address book and where they wetre not specific enough it would display the matching addresses for selection of the correct one. It no longer does this.

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• Why do Google search results include pages disallowed in robots.txt?

  - by Ilmari Karonen

  I have some pages on my site that I want to keep search engines away from, so I disallowed them in my robots.txt file like this: User-Agent: * Disallow: /email Yet I recently noticed that Google still sometimes returns links to those pages in their search results. Why does this happen, and how can I stop it? Background: Several years ago, I made a simple web site for a club a relative of mine was involved in. They wanted to have e-mail links on their pages, so, to try and keep those e-mail addresses from ending up on too many spam lists, instead of using direct mailto: links I made those links point to a simple redirector / address harvester trap script running on my own site. This script would return either a 301 redirect to the actual mailto: URL, or, if it detected a suspicious access pattern, a page containing lots of random fake e-mail addresses and links to more such pages. To keep legitimate search bots away from the trap, I set up the robots.txt rule shown above, disallowing the entire space of both legit redirector links and trap pages. Just recently, however, one of the people in the club searched Google for their own name and was quite surprised when one of the results on the first page was a link to the redirector script, with a title consisting of their e-mail address followed by my name. Of course, they immediately e-mailed me and wanted to know how to get their address out of Google's index. I was quite surprised too, since I had no idea that Google would index such URLs at all, seemingly in violation of my robots.txt rule. I did manage to submit a removal request to Google, and it seems to have worked, but I'd like to know why and how Google is circumventing my robots.txt like that and how to make sure that none of the disallowed pages will show up in their search results. Ps. I actually found out a possible explanation and solution, which I'll post below, while preparing this question, but I thought I'd ask it anyway in case someone else might have the same problem. Please do feel free to post your own answers. I'd also be interested in knowing if other search engines do this too, and whether the same solutions work for them also.

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• Does my DLink DNS-323 need to reside on a "192.168.0.0/24" subnet?

  - by Raymond

  I've installed two brand new 2-tib drives in the DLink and plugged it in to my network. I set my router's static address table to include the MAC address of the device; however it doesn't ever "show up." Do I need to use the custom software to administer this device? Do I need to use a "192.168.0.0/24" network in order for this device to work (asking because it states that if DHCP isn't detected, it will default to an address in that range; and my network is not in that range).

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• Apache mod_remoteip and access logs

  - by GioMac

  Since Apache 2.4 I've started using mod_remoteip instead of mod_extract_forwarded for rewriting client address from x-forwarded-for provided by frontend servers (varnish, squid, apache etc). So far everything works fine with the modules, i.e. php, cgi, wsgi etc... - client addresses are shown as they should be, but I couldn't write client address in access logs (%a, %h, %{c}a). No luck - I'm always getting 127.0.0.1 (localhost forward ex.). How to log client's ip address when using mod_remoteip?

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• How to specify multiple HostName/Port combinations in .ssh/config

  - by leoluk

  I have multiple notebooks and workstations which pull and push from multiple Mercurial repositories on a central server. I usually use .ssh/config to set an alias: Host repo-server HostName server.somedomain User user143 IdentityOnly yes IdentityFile ~/hgkey Port 156 ... and some more options, you get the idea. I can then simply do a hg push ssh://repo-server//hgroot/someproject on every local repository, and I can change the server address and port in one place. For workstations, this works fine, but the notebooks can access the server either from inside the network or from outside, using a different address and a different port. Is there any way I can specify multiple HostName/Port combinations so that SSH automatically tries them in order? This way, the users could push and pull without having to care about the correct address. (of course, using a VPN would be the most correct solution)

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• Running 32 bit SQL Server 2005 on 64 bit Windows Server?

  - by TooFat

  If I have a 32 bit version of SQL Server 2005 running on a 64 bit Windows Server does the max amount of memory avail. the SQL Server process increase from 2gb to 4gb. In reading this blog entry by Mark Russinovich in which he states that "All Microsoft server products and data intensive executables in Windows are marked with the large address space awareness flag" and "Because the address space on 64-bit Windows is much larger than 4GB, something I’ll describe shortly, Windows can give 32-bit processes the maximum 4GB that they can address and use the rest for the operating system’s virtual memory." which leads me to believe that the answer is "yes" but I not totally confident.

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• Routing / binding 128 to one server

  - by Andrew

  I have a Ubuntu server with 128 ip's (static external ips 86.xx.xx.16), and I want to crawl pages thru different ip's. The gateway is xx.xxx.xxx.1, the main ip is xx.xxx.xxx.16, and the other 128 ip's are xx.xxx.xxx.129/255. I tried this configuration in /etc/network/interfaces but I doesn't work. It work if I remove the gateway for the aliases eth0:0 and eth0:1. I think this is routing problem. auto lo iface lo inet loopback auto eth0 auto eth0:0 auto eth0:1 iface eth0 inet static address xx.xxx.xxx.16 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:0 inet static address xx.xxx.xxx.129 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:1 inet static address xx.xxx.xxx.130 netmask 255.255.255.128 gateway xx.xxx.xxx.1 Also, please tell me how to "reset" every changes that I made in networking and routing. Thank you

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• Google Analytics custom variables and how are they recorded?

  - by mrtsherman

  I have been asked to add GA custom variable tracking to my company's website. The company website uses server side includes, so making modifications to the tracking code happens identically everywhere. Maintenance is therefore a headache. Also, GA takes about twenty-four hours for custom variables to start showing up in reports and that makes troubleshooting a headache. So if you have custom variables // visitor level tracking, id = 12345 _gaq.push(['_setCustomVar', 1, 'id', '12345', 1]); // page level tracking, email = [email protected] _gaq.push(['_setCustomVar', 1, 'email', '[email protected]', 1]); The marketing people want the following out of this: User visits site and we record a unique id for them. Whenever they return this id will be used in GA. User signs up for our newsletter on page X and we record their email address. Whenever they return this email address is used in GA. Now a big problem for me is that I don't use GA and the marketing people don't use custom variables. So we don't actually know how this will work. Do I want Page, Session or Visitor level tracking? What happens because the same GA code is used on every page? If they visit the email sign up form and we record the email address, but then they go somewhere else where email is nonexistent will the value get 'overwritten.' Sorry for the long question, but there are a lot of unknowns for a GA noob.

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• Impossible remove Logical Volumes or Volume Group LVM2

  - by abkrim

  After a disk crash part of a LVM group, I can't use LVM2 properly. If like delete a Logical Volume impossible (Error on SATA Volumen) lvscan Couldn't find device with uuid vxHO8W-FPbL-9d5N-GUVb-Lo8d-D9WZ-1RY3Bx. inactive '/dev/sata/isos' [100.00 GiB] inherit inactive '/dev/sata/vm-999-disk-1' [10.00 GiB] inherit inactive '/dev/sata/vm-300-disk-1' [51.00 GiB] inherit ACTIVE '/dev/pve/vm-103-disk-1' [200.00 GiB] inherit lvremove /dev/sata/isos Couldn't find device with uuid vxHO8W-FPbL-9d5N-GUVb-Lo8d-D9WZ-1RY3Bx. Segmentation fault dmsetup remove --force sata device-mapper: table ioctl on sata failed: No such device or address device-mapper: reload ioctl on sata failed: No such device or address device-mapper: remove ioctl on sata failed: No such device or address Command failed Try also, vgreduce --removemissing, and other commands for delete ALL on SATA Volumen and start form 0. PVE volumen it's on production. Apreciate help

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• Issue updating domain name servers from BlueHost to AWS

  - by cowls

  I am trying to migrate my site hosting from bluehost to AWS cloud based service. I have the site up and running on AWS with an elastic IP configured, it loads fine when I specify the IP address in the browser. I have gone into Route 53 on the AWS console and created a "hosted zone" for the domain. I then created a new record set of type "A" using the IP address as the value. I have a domain name registered with bluehost. Ive logged into the bluehost account and updated the domain name servers to point to those specified in Route 53 in the AWS console. When I hit the IP address directly the site loads, however it doesn't load when using the domain name (I get a google chrome oops error page saying page is not found) I've tried using this site: http://dns.squish.net/ to debug but it seems to be giving me the correct results. fizaclegems.com 300 IN A 107.20.209.78 Where 107.20.209.78 matches the elastic IP configured in the AWS console. This is the result it gives for all 4 name servers. Am I missing a step here? Does anyone know what else I should be doing or looking for?

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• How to configure multiple addresses on a single interface using Fedora 16

  - by cg.

  I upgraded from Fedora 14 to 16, recently. I had two static IP v4 addresses configured on my ethernet interface by creating two files in /etc/sysconfig/network-scripts: ifcfg-eth0 -> first address ifcfg-eth0:1 -> second address After the upgrade, this resulted in an error message during the boot process and in only the second address being successfully configured on the interface. So, what is the correct way to configure multiple addresses on a single interface on Fedora 16? I could not find anything on this subject in the documentation so far.

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• Set up Ubuntu in Virtualbox to have static ip

  - by Don H

  I frequently work in different locations, and need to have a virtualbox version of Ubuntu server running locally. While I was at home getting it set up, I was able to ssh into the server using the locally allocated IP address. However, now that I'm elsewhere, ifconfig is still showing the old 10.0.x.x ip address, but instead of being in the 10.0.x.x space, my laptop's ip starts with 192.168.x.x With that in mind, if there a straightforward way to set up the virtual box Ubuntu server in such a way that I can just connect using "ssh servername" regardless of it's ip address?

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• What is the best way to get the external internet gateway IP reported periodically?

  - by basilmir

  I have a OS X Server behind an airport extreme, serving services via opened ports on the airport. The server has a 10.0.x.x local address, always the same one. The airport extreme gets it's external IP address via PPPoE, and sometimes... once a week it changes. For security reasons WE ACTUALLY like this behavior. But i need a way to know the external IP address just in case i need to connect and do something to the server while on the outside. What can i do?

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• RDC not working from outside

  - by Cotten

  I've set up Remote Connection according to : http://windows.microsoft.com/is-IS/windows7/allow-remote-desktop-connections-from-outside-your-home-network That is, Allow remote connections to the computer you want to access. Make sure Remote Desktop is able to communicate through your firewall. Find the IP address of the computer on your home network that you want to connect to. Open your router's configuration screen and forward TCP port 3389 to the destination computer's IP address. Find your router's public IP address so that Remote Desktop can find it on the Internet. When I'm inside the LAN, RDC works flawlessly. When I try to connect to the ip given by my ISP it cannot connect. I've setup port forwarding for 3389 on my netgear router. Thanks!

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• Custom host file for Firefox

  - by acidzombie24

  Instead of changing my host file I'd like Firefox to think my domain is on my own server while my other browser uses the real IP address. I used to edit my host files but that forces both browsers to change the IP address. I found change host, but it doesn't appear to use the alternative host file. I also saw a comment asking when it will work on Firefox 6+. I tried Host Admin and it fails. It works but the alternative IP address must be in your host file already (which I don't want) and it lets you deselect a domain so the host file is ignored which is not what I want.

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