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• Virtual Lan on the Cloud -- Help Confirm my understanding?

  - by marfarma

  [Note: Tried to post this over at ServerFault, but I don't have enough 'points' for more than one link. Powers that be, move this question over there.] Please give this a quick read and let me know if I'm missing something before I start trying to make this work. I'm not a systems admin professional, and I'd hate to end up banging my head into the wall if I can avoid it. Goals: Create a 'road-warrior' capable star shaped virtual LAN for consultants who spend the majority of their time on client sites, and who's firm has no physical network or servers. Enable CIFS access to a cloud-server based installation of Alfresco Allow Eventual implementation of some form of single-sign-on ( OpenLDAP server ) access to Alfresco and other server applications implemented in the future Given: All Servers will live in the public internet cloud (Rackspace Cloud Servers) OpenVPN Server will be a Linux disto, probably Ubuntu 9.x, installed on same server as Alfresco (at least to start) Staff will access server applications and resources from client sites, hotels, trains, planes, coffee shops or their homes over various ISP, using their company laptops or personal home desktops. Based on my Research thus far, to accomplish this, I'll need: OpenVPN with Bridging Enabled to create a star shaped "virtual" LAN http://openvpn.net/index.php/open-source/documentation/miscellaneous/76-ethernet-bridging.html A Road Warrior Network Configuration, as described in this Shorewall article (lower down the page) http://www.shorewall.net/OPENVPN.html Configure bridge addressesing (probably DHCP) http://openvpn.net/index.php/open-source/faq.html#bridge-addressing Configure CIFS / Samba to accept VPN IP address http://serverfault.com/questions/137933/howto-access-samba-share-over-vpn-tunnel Set up Client software, with keys configured for access (potentially through a OpenVPN-Sa client portal) http://www.openvpn.net/index.php/access-server/download-openvpn-as/221-installation-overview.html

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• hadoop: port appears open locally but not remotelly

  - by miguel

  I am new to linux and hadoop and I am having the same issue as in this question. I think I understand what is causing it but I don't know how to solve it (Don't know what they mean by "Edit the Hadoop server's configuration file so that it includes its NIC's address."). The other post that they link says that the configuration files should refer to the machine's externally accessible host name. I think I got this right as every hadoop configuration file refers to "master" and the etc/hosts file lists the master by its private IP address. How can I solve this? Edit: I have 5 nodes: master, slavec, slaved, slavee and slavef all running debian. This is the hosts file in master: 127.0.0.1 master 10.0.1.201 slavec 10.0.1.202 slaved 10.0.1.203 slavee 10.0.1.204 slavef this is the hosts file in slavec (it looks similar in the other slaves): 10.0.1.200 master 127.0.0.1 slavec 10.0.1.202 slaved 10.0.1.203 slavee 10.0.1.204 slavef the masters file in master: master the slaves file in master: master slavec slaved slavee slavef the masters and slaves file in slavex has only one line: slavex

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• Fixing Poor Email

  - by Tiffany Walker

  I'm having an issue with SenderBase. My IPs are not blocked in any BLs but people who use SenderBase/Ciscos stuff do not get my emails. Is this because my email system is setup poorly? They list the following: Your email server or a computer in your network may be infected with malware and may be used to send spam. You may have an insecure network which is allowing other parties to use your network to send spam. Your email server may be misconfigured and might relay spam. You may be utilizing a dynamic IP that is not allowed to relay email directly to the Internet. I have just my site running CPanel. As far as I know there is no spam or abuse. What should I check to ensure that the mail systems (Exim) are up to standards? I have the server pretty well configured so I just can't see the system being abused without me knowing it. What standards should I be ensuring my e-mail server aligns up to?

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• What could cause a huge packet loss in Ubuntu 9.10, for both wired and wireless?

  - by xzenox

  I was previously using 9.04 fine (and in fact, I am posting this from my old 9.04 live cd). I tested the following install steps in a virtualbox vm prior to following the sames ones to upgrade my laptop: Download/burn ubuntu minimal cd (12mb one) Install ubuntu minimal sudo apt-get update sudo apt-get upgrade sudo apt-get ubuntu-desktop ubuntu-standard In the VM worked fine and I found myself with a working 9.10 ubuntu, network worked fine and I was able to test my backups and DropBox without a hitch (host was 9.04). When I followed the same steps on my laptop, everything worked up to after 9.10 being installed and working. As far as I can tell, everything besides eth0/wireless works. For some reason, I am unable to access the internet. Ping reports that over 99% of packets get lost (over an hour or so of pinging). This means for example that if I try hard enough, I can load a webpage but only at the cost of much patience... This happens both for a wired and wireless connection to my wrt310n (updated with latest firmware). At first I thought that it could be related to the ipv6 issues ppl have been experiencing however even after disabling ipv6 at the kernel level (through grub), I still get the issue. I do not think this is related to DNS issues or the likes since even when I ping my ISP's gateway IP, I have the same amount of packet loss. No DNS resolving should be required there. Access to my router works peachy with no packet loss there. I've tried different MTU values but to no avail. Note that this issue affects every web-enabled application: firefox, ping, synaptic, etc. The same hardware/router combo works with 9.04 but not with 9.10. In fact, when I did: sudo apt-get ubuntu-desktop ubuntu-standard after 9.10 minimal was installed, it downloaded over 400mb of packages without a hitch so my guess is that one of those packages either in ubuntu-desktop or ubuntu-standard is causing havok. Thoughts?

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• fast way to find network user computer on domain hogging all wan bandwidth

  - by dasko

  i have a network of about 40 domain users and i have huge latency wan issues, like 1400ms for google.com pings. I have noticed that the problem goes away after everyone goes home for the day. I would like to know if i should use something like a hub with wireshark on the router or modem to see if there are any irregular activity. I am open to suggestions but i need to isolate which user has the bug. I am assuming it is either downloads or someone spamming out heavily and not knowing. It would be best to trace to ip number so i can just look into dns and find the pc hostname with the problem? This is the first client i have this problem with so never really needed to address it before but not suprised as users don't actually listen to any best practices that we have suggested. Please help, thanks. just to update, pc's to routers and other computers have ping latency of 1ms so it is right after i hit the wan, using tracert to a web site (random), that i get the massive delay in the responses. As well this is a dsl line with 5mb down and 650kb up (maybe upload saturation?) thanks.

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• Can't connect to public WiFi with MacBookPro at coffee shops and libraries

  - by Nathan Bowers

  The Problem: I can't connect to public, unencrypted WiFi at my local public library or Peets Coffee. My Setup: Late 2006 MacBookPro running 10.5.8. I have Parallels installed. It's supposed to work like this: 1) Connect to their unencrypted WiFi network 2) Open a browser which redirects you to their "enter password/agree to terms" page. 3) Browse normally. I can connect to the WiFi network, but when I try to authenticate I always get stuck in a redirect loop. It's been like this for a while. Even before I upgraded to 10.5.8. I never have trouble with encrypted networks or regular open WiFi. What I've tried: Disabling Parallels connections in Network Prefs. Superstition: somehow Parallels installed something in the network stack that's messing me up. Pinging the IP address of the WiFi node I'm connected to. I can ping it, it's there, but I still get stuck in this authentication redirect loop. Tried different browsers, tried different cookie and security settings. Even tried IE under Parallels. No dice. Tried flushing DNS cache. Asked library and coffee employees for help. It didn't go well. My Question: Anybody else have this problem? What should I be looking for?

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• Apache reverse proxy access control

  - by Steven

  I have an Apache reverse proxy that is currently reverse proxying for a few sites. However i am now going to be adding a new site (lets call it newsite.com) that should only be accessible by certain IP's. Is this doable using Apache as a reverse proxy? I use VirtualHosts for the sites that are being proxyied. I have tried using the Allow/Deny directives in combination with the Location statements. For example: <VirtualHost *:80> Servername newsite.com <Location http://newsite.com> Order Deny,Allow Deny from all Allow from x.x.x.x </Location> <IfModule rewrite_module> RewriteRule ^/$ http://newsite.internal.com [proxy] </IfModule> I have also tried configuring allow/deny specicaily for the site in the Proxy directives, for example <Proxy http://newsite.com/> Order deny,allow Deny from all Allow from x.x.x.x </Proxy> I still have this definition for the rest of the proxied sites however. <Proxy *> Order deny,allow Allow from all </Proxy> No matter what i do it seems to be accessible from any where. Is this because of the definition for all other proxied sites. Is there an order to which it applies Proxy directives. I have had the newsite one both before and after the * one, and also within the VirtualHost statement.

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• New XPC: No video, no ethernet link, but drive spins

  - by Mike Pennington

  I bought a Shuttle XPC SH67H3 with integrated video. I installed: An Intel i5 2450P 16GB DDR3 RAM A SATA hard drive from my old linux server that still is bootable I have both power connectors plugged into the motherboard. I realize that the Intel i5-2450P doesn't have video capabilities; however, the drive spins like it's doing something useful. It seems like I should get an ethernet link light when I fire this up. I plan to run this headless anyway, so it would be really nice if I could figure out how to run this without a video card at all. I know the IP address and login info for the linux install on the disk. I plugged in speakers, but get no bios beeps when I power it up. Shuttle's bios manual has nothing in there that indicates I should have problems in this configuration. My questions: Is there a reason that the missing video card would block usage of the ethernet port? Are there settings on the motherboard / bios I can change to get this working?

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• postfix concurrency limit with round robin dns

  - by goose

  Take the following internal round robin dns setup mymta.com. IN A 172.31.1.1 mymta.com. IN A 172.31.1.2 mymta.com. IN A 172.31.1.3 mymta.com. IN A 172.31.1.4 mymta.com. IN A 172.31.1.5 mymta.com. IN A 172.31.1.6 mymta.com. IN A 172.31.1.7 mymta.com. IN A 172.31.1.8 mymta.com. IN A 172.31.1.9 mymta.com. IN A 172.31.1.10 Now assume the following postfix setup (assume these are the only tweaks from defaults in debian package) main.cf: smtp_connection_cache_destinations = mymta.com smtp_connection_cache_reuse_limit = 750 smtp_destination_concurrency_limit = 75 transport * :[mymta.com] I would expect 75 concurrent connections spread across the 10 A records I've set in DNS. However I'm seeing more than a few hundred connections to mymta.com and I'm wondering if Postfix is "smart" enough to set up 75 concurrent connections for each IP address. Thoughts?

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• Network Explorer Intermittently Fails to Display all Computers in Work Group

  - by graf_ignotiev

  I run a small computer lab of 10 computers and occasionally, when using the network explorer (a.k.a Network Browser) some or all of the remote computers will fail to appear. If I try to access a remote computer by its name I get an unspecified error (code 0x80004005), but I am still able to access it with the computer's IP address. The strangest part is that the problem will inexplicably go away after waiting awhile. Each computer is running Windows 7 x64 Enterprise and has identical hardware, software and configuration. They are all on the same subnet and in the same workgroup. I've spent days researching the problem and have tried the following solutions: Updated the BIOS, chipset and network adapter drivers Changed Power Settings in Network Adapter Properties so that the computer will not turn it off Disabled the Computer Browser service Changed the DHCP node type to broadcast Reviewed the Event Viewer logs Steps 3 and 4 have seemed to help the problem a little bit, but not completely. I'm beginning to suspect that the problem might lie with our router which is a ZyXEL ZyWALL 2WG, as the packets sent by Network Discovery may not be returning in time, but I wanted to get some perspective in the issue before I went any further.

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• Windows clients unable to access Samba share on AD joined Linux box every 7 days

  - by Hassle2

  The problem: Every 7 days, 2 Windows Servers are unable to access a SMB/CIFS share. It will start working after a handful of hours. The environment: OpenFiler Linux box joined to 2003 AD Domain Foreground app on Win2003 server access the SMB/CIFS share with windows credentials Another process on Win2008 access the share via SQL Server with windows credentials The Samba version on the Linux box is 3.4.5. Security is set to ADS wbinfo and getent return back expected users and groups Does not look to be a double hop issue as it's always the 2 accounts, regardless of the calling user. There is a DNS entry in both forward and reverse lookup zone for the linux box The linux box's computer object in active directory shows that it was modified around/at the same time that the two clients started failing to access the share Trying to access the share via IP works when by name does not Rebooting the Windows server takes care of it (it's production and only restarted it once) Restarting smbd, winbind, nmbd had no effect Error in samba log for the client in question: smbd/sesssetup.c:342(reply_spnego_kerberos) Failed to verify incoming ticket with error NT_STATUS_LOGON_FAILURE! The Question: Does this look like the machine account password is changing (hence the AD object showing the updated modified date) or are the two windows clients unable to request a new ticket that works against this linux box?

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• Configuration for Router Behind Uverse 2Wire

  - by Nori

  I have a 2Wire Uverse router(RG). I'm not particularly fond of it and want to use it as a modem only. I have a Linksys router with Tomato firmware on it and want that to be configured as the router. Most of the "guides" I've seen in my searches has been to enable DMZ Plus mode, but I don't see a way to make that work while my router has a static IP address. I played with it for quite some time yesterday and didn't see a way to get it to work. Then I ran across a setting in broadband for configuring another network. I played with that for a little bit but ran out of time and couldn't get it to work. So my question is for anyone out there who has Uverse and successfully setup a Tomato based firmware router behind the RG. How did you get it configured? I'm sure if I continued playing with it I could get it to work, but if someone out there already has it working then that would make my life easier. Thoughts? Thanks.

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• cPanel web servers mounting home partition to a NAS or SAN

  - by Scott

  I currently have 2 cPanel web servers that are little 1RU dual cpu quad core xeons. They have a lot of resources for processing and handling web requests, and never exceed more than 10% cpu usage. They also have plenty of RAM. The problem is though that they both have RAID 1 160Gb SAS hard disk drives in them that are 75% full, and growing by the day. I didnt think that the amount of disk usage would be so high, but due to the nature of the sites hosted, this has become an issue. The easy fix would be just to upgrade the hard drives to something bigger (probably not of the SAS variety), but I am thinking of keeping the current machines as "processing servers" and buying a central "storage server" with about 12TB of storage. The /home/ partition on each of the 1RU servers would be mounted to a NAS or SAN point on this central storage server. My questions are: - Has anyone got a cPanel setup where they mount /home/ to a NAS or SAN elsewhere? If so, can you provide details as to what you did and how it went :) - Any recommendations on networking? Is gigabit ethernet enough? Is TCP/IP going to be a noticable performance problem? Anyone used a TOE key? - Anyone benchmarked or had any performance issues with SAN over NAS? Any help greatly appreciated. Scott

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• Servers in DMZ will not communicate with each other

  - by Tukaro

  (Full disclosure: I rate barely above "noob" when it comes to networking.) My workplace recent got a new web server. Since we're nearing the end of an overhaul of our website, we're doing a slooooow migration between the old web server and the new one. The old webserver (we'll call it SERVOLD) is Windows Server 2008 with IIS 7. It does not have SQL Server installed. The new server (SERVNEW) is Windows Server 2008 R2, IIS 7.5, with the same version of SQL Server installed. Both are located in the DMZ for our network, and both have their own outward-facing IP address (.3 and .4, respectively). Each server can communicate fine with computers within the domain (not in the DMZ), and those same computers have no trouble communicating with either server. Both servers are also accessible from the internet just fine. However, no matter what, these two servers just refuse to recognize each other. They have the same Workgroup name listed (WORKGROUP), and I thought that would be enough for them to recognize each other. What needs to happen such that I can get these two servers to communicate with each other? We want to do a gradual roll-over to the new website (new one uses ASP.NET, old one uses CFMX), so being able to use one database between both servers is a necessity. Thanks!

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• DNS zone file SPF configuration to support sending mail from multiple servers and gmail

  - by Tauren

  I want to configure SPF on a domain to allow mail to be sent from: the x.com website server (x.com and www.x.com - both at same IP) it's MX servers (smtp.x.com, mx.x.com, mail.x.com) another server that isn't listed as an MX server (somehost.x.com) via gmail using an account that has authenticated use of [email protected] Will this zone file work? If not, what are the problems with it? $ttl 38400 @ IN SOA ns1.x.com. hostmaster.x.com. ( 201003092 ; serial 8H ; refresh 15M ; retry 1W ; expire 1H ) ; minimum @ NS ns1.x.com. @ NS ns2.x.com. @ MX 10 mx.x.com. @ MX 20 smtp.x.com. @ MX 30 mailhost.x.com. ; SPF records @ IN TXT "v=spf1 a mx a:somehost.x.com include:_spf.google.com ~all" mx IN TXT "v=spf1 a -all" smtp IN TXT "v=spf1 a -all" mailhost IN TXT "v=spf1 a -all" Questions: Is _spf.google.com the right thing to include for gmail.com, or is it only for Google Hosted Apps? If only for Google Apps, what should I include to send from gmail.com? If mail shouldn't be sent from anywhere else, is it safe to use -all instead of ~all? Does it make sense to add specific SPF records for each of the mail servers? Any other problems with the zone file? I want to confirm these things before making changes to my zone file. The file has SPF configured basically the same now, just without google.com and somehost, but I want to make sure I won't break things when I change it.

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• Setting up subdomain to respond on :443 with apache2

  - by compucuke

  I read through some guides on this and I believe it is possible to have apache respond to a subdomain through ssl. I have domain.com responding on 80 and I do not need domain.com responding on 443. Rather, the only use I have for ssl is for the subdomain sub.domain.com. So my site should be http://domain.com http://www.domain.com https://sub.domain.com https://www.sub.domain.com My CNAME records are as follows sub.domain.com xxx.xx.xx.xxx *.sub.domain.com xxx.xx.xx.xxx The A record exists but should not matter for the example. I set up a separate config file in sites-enabled for sub.domain.com NameVirtualHost xxx.xx.xx.xxx:443 <VirtualHost xxx.xx.xx.xxx:443> SSLEngine on SSLStrictSNIVHostCheck on SSLProtocol -ALL +SSLv3 +TLSv1 SSLCipherSuite ALL:!aNULL:!ADH:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:-MEDIUM ServerAlias sub.domain.com DocumentRoot /usr/local/www/ssl/documents/ SSLCertificateFile /root/sub.domain.com.crt SSLCertificateKeyFile /root/sub.domain.com.key Alias /robots.txt /usr/local/www/ssl/documents/robots.txt Alias /favicon.ico /usr/local/www/ssl/documents/favicon.ico Alias /js/libs /usr/local/www/ssl/documents/js/libs Alias /media/ /usr/local/www/documents/media/ Alias /img/ /usr/local/www/ssl/documents/img/ Alias /css/ /usr/local/www/ssl/documents/css/ <Directory /usr/local/www/ssl/documents/> Order allow,deny Allow from all </Directory> WSGIDaemonProcess sub.domain.com processes=2 threads=7 display-name=%{GROUP} WSGIProcessGroup sub.domain.com WSGIScriptAlias / /usr/local/www/wsgi-scripts/script.wsgi <Directory /usr/local/www/wsgi-scripts> Order allow,deny Allow from all </Directory> </VirtualHost> Now, it is important to mention that https://domain.com responds with what I have running from script.wsgi above instead of on https://sub.domain.com. It does not respond to sub.domain.com. checking https://sub.domain.com causes a 105 error. This is a DNS error but I am convinced the DNS does not have a problem with the CNAME records, they just point to my IP. Am I doing something that Apache can not do?

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• SSL in IIS 7 on a subdomain in a web farm

  - by justjoshingyou

  I have been having one of the most frustrating days in my entire IT career. I am trying to install an SSL certificate on a subdomain in a web farm. http://shop.mydomain.com needs to ALWAYS be forced to https://shop.mydomain.com I have a temporary cert issued from verisign on shop.mydomain.com I have installed the cert on the server. The website for shop.mydomain.com is set as a host header in IIS with the DNS entry pointed to the same IP as mydomain.com - which is our load balancer. I actually have 2 load balancers (as needed by our ISP). One redirects all traffic on port 80 out to the different servers on port 80. The other pushes out port 443 to the servers on port 443. shop.mydomain.com is to be the only site protected by SSL at this time. When I add the binding and I navigate to https://shop.mydomain.com it pops up with a warning about the cert being invalid (assumed because this is a test cert), and then it sends the user to http. So, I checked the box "Require SSL and it redirects to http://shop.mydomain.com/default.aspx and displayes an ASP.NET 404 error message. (not the IIS 404 error) I tried removing the binding on the site to port 80 as well with no luck. I am nearly ready to crawl under my desk into the fetal position. How on earth do I make this work? I can't even get it to work on one machine, let alone in the load balanced environment.

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• Exchange 2010 POP3/IMAP4/Transport services complaining that they can't find SSL certificate after blue screen

  - by Graeme Donaldson

  We have a single-server Exchange 2010 setup. In the early hours of this morning the server had a blue screen and rebooted. After coming back up the POP3/IMAP4 and Transport services are complaining that they cannot find the correct SSL certificate for mail.example.com. POP3: Log Name: Application Source: MSExchangePOP3 Date: 2012/04/23 11:45:15 AM Event ID: 2007 Task Category: (1) Level: Error Keywords: Classic User: N/A Computer: exch01.domain.local Description: A certificate for the host name "mail.example.com" couldn't be found. SSL or TLS encryption can't be made to the POP3 service. IMAP4: Log Name: Application Source: MSExchangeIMAP4 Date: 2012/04/23 08:30:44 AM Event ID: 2007 Task Category: (1) Level: Error Keywords: Classic User: N/A Computer: exch01.domain.local Description: A certificate for the host name "mail.example.com" couldn't be found. Neither SSL or TLS encryption can be made to the IMAP service. Transport: Log Name: Application Source: MSExchangeTransport Date: 2012/04/23 08:32:27 AM Event ID: 12014 Task Category: TransportService Level: Error Keywords: Classic User: N/A Computer: exch01.domain.local Description: Microsoft Exchange could not find a certificate that contains the domain name mail.example.com in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector Default EXCH01 with a FQDN parameter of mail.example.com. If the connector's FQDN is not specified, the computer's FQDN is used. Verify the connector configuration and the installed certificates to make sure that there is a certificate with a domain name for that FQDN. If this certificate exists, run Enable-ExchangeCertificate -Services SMTP to make sure that the Microsoft Exchange Transport service has access to the certificate key. The odd part is that Get-ExchangeCertificate show the cert as enabled for all the relevant services, and OWA is working flawlessly using this certificate. [PS] C:\Users\graeme\Desktop>Get-ExchangeCertificate Thumbprint Services Subject ---------- -------- ------- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ....S. CN=exch01 YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY ....S. CN=exch01 ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ IP.WS. CN=mail.example.com, OU=Domain Control Validated, O=mail.exa... Here's the certificate in the computer account's personal cert store: Does anyone have any pointers for getting POP3/IMAP4/SMTP to use the cert again?

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• lxc bandwidth control using tc

  - by kumar

  I am trying to restrict bandwidth inside my containers. I have tried using the following commands , But I think it is not getting effective. cd /sys/fs/cgroup/net_cls/ echo 0x1001 > A/net_cls.classid # 10:1 echo 0x1002 > B/net_cls.classid # 10:2 tc qdisc add dev eth0 root \ handle 10: htb tc class add dev eth0 parent 10: \ classid 10:1 htb rate 40mbit tc class add dev eth0 parent 10: \ classid 10:2 htb rate 30mbit tc filter add dev eth0 parent 10: \ protocol ip prio 10 \ handle 1: cgroup Here A and B are containers created with this command. lxc-execute -n A -f configfile /bin/bash lxc-execute -n B -f configfile /bin/bash Whereas configfile contains only this entry: lxc.utsname = test_lxc AFter starting the container , I have started vsftpd inside container A and try to access the files using the ftp client from another machine. Then I killed vsftpd in container A and started vsftpd in container B and try to access the files using ftp client from another machine. I cannot observe any difference in performance, for that matter it is nowhere nearer to 40mbit/30mbit. Please correct me whether anything wrong here.

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• My email server is being blocked by Yahoo: TS03 Message permanently deferred.

  - by bilygates

  Hello, My mail server has been getting the following error from Yahoo's mail servers since about a month: postfix/smtp[23791]: host g.mx.mail.yahoo.com[98.137.54.238] refused to talk to me: 421 4.7.1 [TS03] All messages from [my ip] will be permanently deferred; Retrying will NOT succeed. See http:// postmaster.yahoo.com/421-ts03.html I have exchanged about 4 emails with Yahoo's support team. The first three seemed like automated messages, and the 4th told me that there is nothing they can do, but if I change my policies I can send them another email in 6 months. They also told me: However, based on the information you have provided us, we cannot systematically deliver your email to the Inbox at this time. We suggest that you ask your users to set up a filter in Yahoo! Mail to ensure that they get your email messages in their Inbox. The problem is that my email doesn't even get to their Spam folder. The server won't allow any connections. I have never sent spam messages, not even newsletters. I only send emails for my new users so they can activate their account. I've also implemented DKIM and told Yahoo about this. I have checked my configuration with http://www.myiptest.com/staticpages/index.php/DomainKeys-DKIM-SPF-Validator-test and it reports that both SPF and DKIM are set up correctly. What should I do? Basically, I'm losing new users every day. Any help will be appreciated. P.S.: I apologize if this particular question has already been asked. I searched for it but didn't find it.

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• Domain joined computer unable to access servers through VPN

  - by kscott

  Our servers are in a virtual off site hosting center, our office has a vpn connection to the data center, but for reasons I don't understand we also have to connect to the Citrix Access Gateway (CAG) client in order to access the servers. I am a programmer with rather limited ops knowledge including a weak grasp of networking and terminology. Bear with me. I was just given a new laptop, which is a 64 bit Windows 7 system unlike my previous 32 bit Windows XP desktop which was able to connect without issue. My laptop has been joined to the domain so that I login with my AD credentials, I am able to connect to the CAG and get authenticated, and after doing this I can ping our servers and they resolve to the correct internal IP addresses, but I am unable to use remote desktop to the servers, connect to SQL servers through my local SQL Management Studio, navigate to them through the file system, or view any of our internal intranet websites. All of which I was able to do previously. I have tried turning off my Windows firewall and the problem remains, the DNS servers are set to the correct IPs of our domain controllers, and the ops guys here are a little stumped. Does any one have any suggestions?

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• Apache 2.4, Ubuntu 12.04 Forbidden Errors

  - by tubaguy50035

  I just installed Apache 2.4 today, and I'm having some issues getting vhost configuration to work correctly. Below is the vhost conf <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /hosting/Client/site.com/www ServerName site.com ServerAlias www.site.com <Directory "/hosting/Client/site.com/www"> Options +Indexes +FollowSymLinks Order allow,deny Allow from all </Directory> DirectoryIndex index.html </VirtualHost> There is an index.html file in /hosting/Client/site.com/www. When I go to the site, I receive a 403 forbidden error. The www-data group is the group on the www folder, which I've already given all permissions (r/w/x). I'm really at a loss as to why this is happening. Any thoughts? If I remove the vhost and go straight to the IP address, I get the default, "It works!" page. So I know that it's working. The error log says "client denied by server configuration". apache2ctl -S dump: nick@server:~$ apache2ctl -S /usr/sbin/apache2ctl: 87: ulimit: error setting limit (Operation not permitted) VirtualHost configuration: *:80 is a NameVirtualHost default server site.com (/etc/apache2/sites-enabled/site.com.conf:1) port 80 namevhost site.com (/etc/apache2/sites-enabled/site.com.conf:1) alias www.site.com port 80 namevhost site.com (/etc/apache2/sites-enabled/site.com.conf:1) alias www.site.com ServerRoot: "/etc/apache2" Main DocumentRoot: "/var/www" Main ErrorLog: "/var/log/apache2/error.log" Mutex watchdog-callback: using_defaults Mutex default: dir="/var/lock/apache2" mechanism=fcntl Mutex mpm-accept: using_defaults PidFile: "/var/run/apache2.pid" Define: DUMP_VHOSTS Define: DUMP_RUN_CFG Define: ENALBLE_USR_LIB_CGI_BIN User: name="www-data" id=33 not_used Group: name="www-data" id=33 not_used Ouput of namei -mo /hosting/Client/site/www/index.html f: /hosting/Client/site.com/www/index.html drwxr-xr-x root root / drwxr-xr-x root root hosting drwxr-xr-x root root Client drwxr-xr-x nick www-data site.com drwxr-xr-x nick www-data www -rw-rwxr-x nick www-data index.html

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• Nginx proxy domain to another domain with no change URL

  - by Evgeniy

  My question is in the subj. I have a one domain, that's nginx's config of it: server { listen 80; server_name connect3.domain.ru www.connect3.domain.ru; access_log /var/log/nginx/connect3.domain.ru.access.log; error_log /var/log/nginx/connect3.domain.ru.error.log; root /home/httpd/vhosts/html; index index.html index.htm index.php; location ~* \.(avi|bin|bmp|css|dmg|doc|docx|dpkg|exe|flv|gif|htm|html|ico|ics|img|jpeg|jpg|js|m2a|m2v|mov|mp3|mp4|mpeg|mpg|msi|pdf|pkg|png|pps|ppt|pptx|ps|rar|rss|rtf|swf|tif|tiff|txt|wmv|xhtml|xls|xml|zip)$ { root /home/httpd/vhosts/html; access_log off; expires 1d; } location ~ /\.(git|ht|svn) { deny all; } location / { #rewrite ^ http://connect2.domain.ru/; proxy_pass http://127.0.0.1:8080/; proxy_redirect off; proxy_hide_header "Cache-Control"; add_header Cache-Control "no-store, no-cache, must-revalidate, post-check=0, pre-check=0"; proxy_hide_header "Pragma"; add_header Pragma "no-cache"; expires -1; add_header Last-Modified $sent_http_Expires; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } I need to proxy connect3.domain.ru host to connect2.domain.ru, but with no URL changed in browser's address bars. My commented out rewrite line could solve this problem, but it's just a rewrite, so I cannot stay with the same URL. I know that this question is easy, but please help. Thank you.

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• Why do I have 55 local area connections in ipconfig?

  - by RMorrisey

  Windows Vista Home Premium. I should mention that I am having no problem whatever getting an internet connection. When I type "ipconfig" in the console, I get (55!) messages of 3 lines each, listing a ton of disconnected network connections. My PC only has one network card. Each message looks like this: Tunnel adapter Local Area Connection* 55: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : These don't cause a major problem; they make it a pain, though, to fish upward and find my IP address. How can I get rid of them? Edit: Actually, a few connection numbers are randomly missing from the sequence; so, it's really more like 30 or 40 connection messages, rather than all 55. Not sure why that is, either.

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• Networking problems in VMWare with wireless bridge

  - by Robert Koritnik

  Barebone data: virtualization: VMWare Workstation 6.5 (latest) Host: Windows Server 2008 x64 Guest: Windows Server 2008 x86 Host network adapter: Ethernet (see comment) Host network adapter: Wireless (see comment) Guest ethernet network adapter 1: Bridged VMNet (automatic) Guest ethernet network adapter 2: Host only VMNet comment: my host has LAN and Wifi but only one at the same time. I'm either wired or wireless. Never both. So bridged connection on VM goes either via wire or air. Problem When I'm wirelessly connected on the host and I access internet within VM my connection just gets stalled (not dropped). It doesn't experience any timeout whatsoever, it just stops downloading/communicating. For instance: I start downloading a file with a browser (IE/FF/CR doesn't matter) and I have to pause/restart download when speed drops to 0. I could wait indefinitely but connection won't pick-up automatically. What did I miss in my network configuration? Update 1 I've tested this in various combinations. This works fine when host is connected via Ethernet. But when host is connected via Wifi, the connection on the guest works as previously described. It connects fine. It gets a valid IP from DHCP... Everything is cool as long as you don't start doing some intensive network traffic (ie. download a 2MB file) In this case it starts downloading and stops after a while. Speed just drops to 0B/s... Sometimes it picks up back, sometimes it doesn't. Connection still stays and works. I can ping around with no problem.

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