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• Does WebDAV even work on IIS 7? I say nay

  - by FlavorScape

  I've tried every configuration from the top 10 stack overflow and server fault results for WebDAV 405 on IIS (for verb PROPFIND and PUT). I'm running server 2008 SP2. Followed all the instructions here. I'm no stranger to configuring servers. This has gotten nowhere after 8 hours. Confirmed system.webserver in applicationhost.config: <add name="WebDAV" path="*" verb="PROPFIND,PROPPATCH,MKCOL,PUT,COPY,DELETE,MOVE,LOCK,UNLOCK" modules="WebDAVModule" resourceType="Unspecified" requireAccess="None" /> Port 443 with basic auth, same issue. Tried port 80 with windows auth. Broken. (405) Windows authentication. Check. Added authoring rules for default site and application. Check. Not the firewall. Check. added "Desktop Experience" role feature Tried HTTPS with Basic Authentication on port 443. Does not work. No other services are running like Sharepoint. Check. confirmed user has read/write NT level permissions for the folder/virtual dir tried net use * http://localhost /user:MYDOMAIN\me myPass get error 1920, if I don't authenticate I get error 67 confirmed I'm not applying filtering to WebDAV: <requestFiltering> <fileExtensions applyToWebDAV="false" /> <verbs applyToWebDAV="false" /> <hiddenSegments applyToWebDAV="false" /> 405 - HTTP verb used to access this page is not allowed. The page you are looking for cannot be displayed because an invalid method (HTTP verb) was used to attempt access. SHOULD I JUST GIVE UP? Other questions that helped none: 405 - ‘Method not Allowed’ adding service hosted in IIS7 webdav on iis7.5 - simply cannot make it work http://studentguru.gr/b/kingherc/archive/2009/11/21/webdav-for-iis-7-on-windows-server-2008-r2.aspx

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• Is my dns server being attacked? And what should I do about it?

  - by Mnebuerquo

  I've been having some intermittent dns problems with a web server, where certain isp's dns servers don't have my hostnames in cache and fail to look them up. At the same time, queries to opendns for those hostnames resolve correctly. It's intermittent, and it always works fine for me, so it's hard to identify the problem when someone reports connectivity problems to my site. In trying to figure this out, I've been looking at my logs to see if there are any errors I should know about. I found thousands of the following messages in my logs, from different ip's, but all requesting similar dns records: May 12 11:42:13 localhost named[26399]: client 94.76.107.2#36141: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:13 localhost named[26399]: client 94.76.107.2#29075: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:13 localhost named[26399]: client 94.76.107.2#47924: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:13 localhost named[26399]: client 94.76.107.2#4727: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:14 localhost named[26399]: client 94.76.107.2#16153: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:42:14 localhost named[26399]: client 94.76.107.2#40267: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:43:35 localhost named[26399]: client 82.209.240.241#63507: query (cache) 'burningpianos.com/MX/IN' denied May 12 11:43:35 localhost named[26399]: client 82.209.240.241#63721: query (cache) 'burningpianos.org/MX/IN' denied May 12 11:43:36 localhost named[26399]: client 82.209.240.241#3537: query (cache) 'burningpianos.com/MX/IN' denied I've read of Dan Kaminski's dns cache poisoning vulnerability, and I'm wondering if these log records are an attempt by some evildoer to attack my dns server. There are thousands of records in my logs, all requesting "burningpianos", some for com and some for org, most looking for an mx record. There are requests from multiple ip's, but each ip will request hundreds of times per day. So this smells to me like an attack. What is the defense against this?

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• DNS configuration issues. Clients inside network unable to resolve DNS server's name

  - by hydroparadise

  Setup the DNS service on Ubuntu 12.04 64 and all apears to be well except that my dhcp clients do not recognize my DNS servers hostname. When doing a nslookup on one of my Windows clients, I get C:\Users\chad>nslookup Default Server: UnKnown Address: 192.168.1.2 Where I would expect the FQDN in the spot where UnKnown is seen. The DNS server know's itself pretty well, but I think only because I have an entry in the /etc/hosts file to resolve. There's so many places to look I don't even know where to begin. Are there any logs I can look at? Something. Places I've looked at and configured: /etc/bind/zones/domain.com.db /etc/bind/zones/rev.1.168.192.in-addr.arpa /etc/bind/named.conf.local EDIT: '/etc/bind/zones/rev.1.168.192.in-addr.arpa' @ IN SOA dns-serv1.mydomain.com [email protected]. ( 2006081401; 28800; 604800; 604800; 86400 ) IN NS dns-serv1.mydomain.com. 2 IN PTR dns-serv1 2 IN PTR mydomain.com EDIT 2: '/etc/bind/named.conf.local' zone "mydomain.com" { type master; file "/etc/bind/zones/mydomain.com.db"; }; zone "1.168.192.in-addr.arpa" { type master; file "/etc/bind/zones/rev.0.168.192.in-addr.arpa"; };

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• How to setup DNS server behind a VPN

  - by Brian

  I want to host some websites behind a VPN and I need some help with the finer points of the configuration. Thus far I've settled on OpenVPN + Bind9 and I want to configure the domains like this: External DNS mail.example.com www.example.com vpn.example.com I want to be able to connect to the vpn using 'vpn.example.com'. Once connected I then want to be able to resolve anything which is '*.vpn.example.com' with the DNS server sitting behind the VPN. I know that OpenVPN can push DNS servers to clients when they connect. I am having trouble though with the DNS config, both internal and external. I've gone through a few tutorials etc. and tried to reason about it myself but I'm not getting anywhere. So my main question would be does the above configuration make sense? If so, any general pointers or examples would be greatly appreciated. Here's what I've tried so far based on this tutorial (I've redacted my domain with example.com). When I try the tests with dig at the end to check the resolution is working it fails. db.vpn.example.com $TTL 15m vpn.example.com. IN SOA ns.vpn.example.com. [email protected]. ( 2009010910 ;serial 900 ;refresh 900 ;retry 900 ;expire 900 ;minimum TTL ) vpn.example.com. IN NS ns.vpn.example.com. ns IN A 192.168.0.2 test IN A 192.168.0.2

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• Pushing updates to live server... FTP isn't cutting it... a better method?

  - by Jenkz

  I'm the lead developer in a team of 2. My partner has only just joined the project and despite using GIT for version control etc, we are still stuck in the dark ages when it comes to code deployment. Currently I make all site updates via FTP (this way I have control / responsibility over everything that goes live), using Filezilla. I've done this for years, but we now have some large PHP classes (300KB), and a lot of traffic. So in short, every time I upload a key class "general" for example, the site goes down until the file finishes uploading. This is only 5/6 seconds at a time, but this is increasingly unacceptable. I realise I can upload the file under a different name and then rename both files... but really there must be a better way? I've heard about rsyncing code across from another server, but I don't see how this prevents switching to the new file whilst uploading. We only have one server (for DB and Apache) but also use some cloud servers (for openx as an example).

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• Can't connect to Sql Server 2008 named instance

  - by eidylon

  I just installed Sql 2008 Express on a new server running Windows Server 2008. I know Sql is working properly, because I can connect to the db fine locally, on the server. I cannot connect to it from a client machine though, neither by IP address nor by machine name (iporname\instance). I know I have the correct IP address, because I am RDCing into the server to perform all this configuration and setup, and if I ping the server name, it is resolving to the correct IP address as well. On the server, I have set up an inbound firewall exception allowing all traffic on any port on any protocol to sqlservr.exe. In SSMS, in server > Properties > Connections Allow remote connections to this server is enabled. In Sql Server Configuration Manager, TCP/IP is enabled in both the Protocols for <instance> and the Client Protocols sections. I looked in the Windows logs, but don't see anything about connections being denied or dropped. As far as I can see, I have everything set right, but cannot connect from a client machine. The client CAN connect to other Sql 2008 Express servers okay, so I know the client configuration is correct. Any ideas where else I can look for info of what/where/how this connection is dropping, greatly apprecaited! The error being returned by the client is: **TITLE: Connect to Server** Cannot connect to [MY.IP.ADD.RSS]\[MYINSTNAME]. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)

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• What is optimal hardware configuration for heavy load LAMP application

  - by Piotr K.

  I need to run Linux-Apache-PHP-MySQL application (Moodle e-learning platform) for a large number of concurrent users - I am aiming 5000 users. By concurrent I mean that 5000 people should be able to work with the application at the same time. "Work" means not only do database reads but writes as well. The application is not very typical, since it is doing a lot of inserts/updates on the database, so caching techniques are not helping to much. We are using InnoDB storage engine. In addition application is not written with performance in mind. For instance one Apache thread usually occupies about 30-50 MB of RAM. I would be greatful for information what hardware is needed to build scalable configuration that is able to handle this kind of load. We are using right now two HP DLG 380 with two 4 core processors which are able to handle much lower load (typically 300-500 concurrent users). Is it reasonable to invest in this kind of boxes and build cluster using them or is it better to go with some more high-end hardware? I am particularly curious how many and how powerful servers are needed (number of processors/cores, size of RAM) what network equipment should be used (what kind of switches, network cards) any other hardware, like particular disc storage solutions, etc, that are needed Another thing is how to put together everything, that is what is the most optimal architecture. Clustering with MySQL is rather hard (people are complaining about MySQL Cluster, even here on Stackoverflow).

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• Alternatives to Splunk?

  - by MichaelGG

  I'm pretty impressed with Splunk, especially version 4. Pretty graphs, alerting (Enterprise only), and fast, accurate, searching. It's a great product. However, the cost just way too high to consider for full production use for our company. All we really need is to be able to index different logs in a central place, and have reasonable searching on that. Having alerts based on a saved search is also really nice. We don't really go beyond that. In fact, our biggest usage has been in deploying new applications. Everything gets logged via log4net to either the Event log on Windows or a text file on Linux. Splunk makes it pretty easy to quickly search across those to make sure all the parts of the app are working ok -- that's saved us tons of time versus hunting down individual logging sources. What alternatives exist in this market? I have a sinking feeling Splunk's pricing is so high because they have the best product by far, and they know it. We want the server to run on Windows. I'd be open to a split model, using one product for general logs (collect via syslog/Snare), and a dedicated product for our custom apps (like Log4Net Dashboard). Would using a simple syslog server such as Kiwi, sent to SQL Server (perhaps with fulltext enabled) work? I'd hope the cost should be well under 5 figures, USD. (And yes, I know, we're cheap. We're a startup with little money, and BizSpark takes care of all our MS licensing.) Edit: I should add, we have about 10 physical servers, 20 VMs, and a couple firewalls and switches. 90% is Windows.

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• Windows Server 2008R2 Virtual Lab Activation strategies?

  - by William Hilsum

  I have a ESXi server that I use for testing, however, I am often needing to create additional Windows Server virtual machines. Typically, if I do not need a VM for more than 30 days, I simply do not activate. However, I have been doing a lot of HA/DRS testing recently and I have had a few servers up for more than this time. I have a MSDN account with Microsoft and have already received extra keys for Windows Server 2008 R2. I am doing nothing illegal and I am sure if I asked, they would issue more - but, I do not want to tempt fate! I have got 3 different "activated" windows snapshots I can get to at any time. If I try to clone these machines, I get the usual "did you copy or move them VM" message. If I choose copy, as far as I can see, it changes the BIOS ID and NIC MACs which is enough to disable activation. If I choose move, it keeps the activation fine (obviously, I know to change the NIC MAC - I believe I can leave the BIOS ID without problems). However, either of these options keeps the same SID code for the computer and user accounts. After the activation period has expired, as far as I can see, all that happens is optional updates do not work - it seems that the normal updates work fine. Based on this, as you can easily get in to Windows when not activated without any sort of workaround, I was wondering if it is ok just to leave a machine un activated? (However, I obviously would prefer if it was activated!) Alternatively, how dangerous is it run multiple machines on a non domain environment with the same SID? I am just interested to know if anyone can recommend a strategy for me? I have only found one solution that deals with bypassing activation - I am not interested in doing anything remotely dodgy... at a stretch, I am happy to rearm (I have never needed to keep a server past 100 days), but, I would rather have a proper strategy in place.

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• Cannot access certain URL on my wireless

  - by dehmann

  Problem: On my wireless network at home, there is one URL that I just cannot access with my browser: http://research.microsoft.com/ I have no problems with the Internet connection otherwise. But on that address I just get The connection was reset The connection to the server was reset while the page was loading. from Firefox. I am using a DSL modem (Westell) and Linksys wireless router (using DHCP). When I use my neighbor's wireless connection I can access the microsoft site without a problem. Additional technical details: But with my connection, here is what I get from nslookup. It is weird: It first cannot find the address, but after I look up another address it can find it: $ nslookup research.microsoft.com ;; connection timed out; no servers could be reached $ nslookup google.com Non-authoritative answer: Name: google.com Address: 72.14.204.104 Name: google.com Address: 72.14.204.147 Name: google.com Address: 72.14.204.99 Name: google.com Address: 72.14.204.103 $ nslookup research.microsoft.com Non-authoritative answer: Name: research.microsoft.com Address: 131.107.65.14 But even after nslookup finds it Firefox still cannot access it. Here is what traceroute says: $ traceroute http://research.microsoft.com/ traceroute: Warning: http://research.microsoft.com/ has multiple addresses; using 8.15.7.117 traceroute to http://research.microsoft.com/ (8.15.7.117), 64 hops max, 40 byte packets 1 dslrouter.westell.com (1XX.XXX.X.X) 4.515 ms 2.760 ms 3.072 ms 2 * * * Traceroute just to the IP: $ traceroute 131.107.65.14 traceroute to 131.107.65.14 (131.107.65.14), 64 hops max, 40 byte packets 1 dslrouter.westell.com (1XX.XXX.X.X) 11.912 ms 2.684 ms 2.808 ms 2 * * * Comparison: Traceroute to google.com IP: $ traceroute 72.14.204.99 traceroute to 72.14.204.99 (72.14.204.99), 64 hops max, 40 byte packets 1 dslrouter.westell.com (1XX.XXX.X.X) 6.428 ms 6.981 ms 117.099 ms 2 * * * Any comments / help?

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• Can you make a Windows network default user profile NOT apply to a certain operating system?

  - by Jordan Weinstein

  I would like to create a network Default User account for Windows 7 only. This is on a Windows 2003 domain with servers from Windows 2000 to 2008 R2 and Windows XP on workstation side. We're about to do a full migration to Windows 7 and I'd like to start using the network default user profile functionality as we're not migrating user profiles over. Want everyone to start clean. I followed the simple steps from this page: http://support.microsoft.com/kb/973289 under the heading: "How to turn the default user profile into a network default user profile in Windows 7 and in Windows Server 2008 R2" but the problem is that profile would then apply to a new user\admin logging into a 2008 server. That's no good. Anyone have any ideas on how to limit what actually uses that network profile? I was thinking about setting deny permissions for all my admin\service accounts on that "\\dcserver\netlogon\Default User.v2" folder but then it might be timing out and cause other problems. Haven't tried yet as that seems like a bad way of making this work.

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• Is there a reason to use internal DNS over 8.8.8.8 ?

  - by skylarking

  I've inherited a LAN where there is really no name resolution being done for local resources... i.e. all users enter IP addresses manually to access printers and network shares. There are no LDAP servers or domains either....workstations simply connect to the network without authentication. DHCP is handled via a core switch... And DNS settings are also handed out by this same core switch. Currently, the DNS assignments are as such, and in this order: 10.1.1.50 / old Pentium III Windows 2003 box running DNS service- 128 MB RAM 169.200.x.x / ISP 4.2.2.2. / the well known public one There a couple thousand clients on the LAN....and most of the activity is web browsing ( this is an educational setting ). First of all, the server seems woefully underpowered for this task...yet there is virtually no slowness when web surfing by clients.... How much horsepower should a heavily used DNS server have ? I have also heard using 4.2.2.2 is a bad idea .... since it has been so overused... Finally, wouldn't it make sense to have a robust external DNS server listed first? ( Google's 8.8.8.8 would seem to be a logical candidate )

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• SQLVDI error - attempt to release mutex not owned by caller

  - by Chris W

  I've started getting some errors in the App event log of one of our database servers (Windows 2003 & SQL Server 2005). The nightly full database backups are completing successfully however immediately after the job success is written to the event log there is a run of entries that say: SQLVDI: Loc=CVDS. Desc=Release(ClientAliveMutex). ErrorCode=(288)Attempt to release mutex not owned by caller. There's five of these logged - the server itself has more than 20 databases on it which are all backed up successfully. The server is backed up by Bacula using a VSS backup. Has anyone got any ideas what would be causing the errors? They seem to have started after a re-boot on Friday to install some patches which included KB960089. Edit: After getting the errors for a few days they've now stopped without any action on my part other than letting the backups continue as they were. It may be a coincidence but they stopped after Bacula completed its weekly full rather than the daily incremental backup.

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• F5 Networks iRule/Tcl - Escaping UNICODE 6-character escape sequences so they are processed as and r

  - by openid.malcolmgin.com

  We are trying to get an F5 BIG-IP LTM iRule working properly with SharePoint 2007 in an SSL termination role. This architecture offloads all of the SSL processing to the F5 and the F5 forwards interactive requests/responses to the SharePoint front end servers via HTTP only (over a secure network). For the purposes of this discussion, iRules are parsed by a Tcl interpretation engine on the F5 Networks BIG-IP device. As such, the F5 does two things to traffic passing through it: Redirects any request to port 80 (HTTP) to port 443 (HTTPS) through HTTP 302 redirects and URL rewriting. Rewrites any response to the browser to selectively rewrite URLs embedded within the HTML so that they go to port 443 (HTTPS). This prevents the 302 redirects from breaking DHTML generated by SharePoint. We've got part 1 working fine. The main problem with part 2 is that in the response rewrite because of XML namespaces and other similar issues, not ALL matches for "http:" can be changed to "https:". Some have to remain "http:". Additionally, some of the "http:" URLs are difficult in that they live in SharePoint-generated JavaScript and their slashes (i.e. "/") are actually represented in the HTML by the UNICODE 6-character string, "\u002f". For example, in the case of these tricky ones, the literal string in the outgoing HTML is: http:\u002f\u002fservername.company.com\u002f And should be changed to: https:\u002f\u002fservername.company.com\u002f Currently we can't even figure out how to get a match in a search/replace expression on these UNICODE sequence string literals. It seems that no matter how we slice it, the Tcl interpreter is interpreting the "\u002f" string into the "/" translation before it does anything else. We've tried various combinations of Tcl escaping methods we know about (mainly double-quotes and using an extra "\" to escape the "\" in the UNICODE string) but are looking for more methods, preferably ones that work. Does anyone have any ideas or any pointers to where we can effectively self-educate about this? Thanks very much in advance.

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• AMIs in Amazon EC2

  - by Jack of Trades

  I really like the Amazon EC2 environment, and thought I'll spend a bit of time playing around with various types of public (Windows!) AMI servers. But testing has been a bit, well, questionable. Some of my findings: It's very difficult to know what exactly a specific public EC2 image is supposed to be doing. Many images come with little to no information. I can't seem to find the passwords to log onto various windows images. Why are they public if they can't be used!? Lots of images are based on S3, and not EBS backed. This is very annoying, as S3 takes a lot longer to do pretty much anything (stop, image etc.) I am only testing images here, so of-course I don't question the value of S3 for other attributes. The description of what an image does is almost useless and many times confusing. Have others come across these EC2 issues. Again, my interest was to just play around with public images for testing/experimentation/etc, and therefore these issues may not be too relevant for more normal EC2 deployment uses.

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

  - by OrenM

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

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• Squid, authentication, Outlook Anywhere, Windows 7 and HTTP 1.1 = NIGHTMARE

  - by Massimo

  I'm running a Squid proxy (latest version, 3.1.4) on Linux CentOS 5.4 with Samba 3.5.4, in order to allow authenticated web access for domain users; everything works fine, and even Windows 7 clients are fully supported. Authentication is transparent for domain users, while it is explicitly requested for non-domain ones, and it works if the user can provide valid domain credentials. All nice and good. Then, Outlook Anywhere kicks in and pain and suffering ensue. When Outlook (be it 2007 or 2010, it doesn't matter) runs on Windows XP clients, it connects gracefully through the Squid proxy to its remote Exchange server. When it runs on Windows 7, it doesn't. If the authentication requirement is lifted from the proxy, everything works on Windows 7 too, so the problem is obviously related to NTLM authentication with Squid. Digging more deeply (WireShark), I discovered Outlook Anywhere uses HTTP 1.1 when it runs on Windows 7, while it uses HTTP 1.0 when on Windows XP. And it looks like Squid, even in its latest incarnation, still has some serious troubles handling HTTP 1.1 properly, particularly when SSL and proxy authentication are thrown in the mix. While waiting for Squid to fully and officially support HTTP 1.1 (and it looks like this could take quite a long time), I'm looking for one of the following solutions: Make Squid handle this correctly, if it is at all possible. Identify Outlook Anywhere connections and have Squid not require authentication for them. But it isn't easy: again, the behaviour of Outlook differs when running on Windows XP and Windows 7, and while on Windows XP Outlook sends a really nice user-agent string of "MSRPC", on Windows 7 it doesn't send any (why? WHY?!?). Force Outlook Anywhere to use HTTP 1.0 even when running on Windows 7. And no, this is not as simple as deselecting "use HTTP 1.1" in Internet Explorer, looks like Outlook ignores that setting and chooses on its own which protocol to use. Any other feasible solution which doesn't involve whitelisting specific destination Exchange servers, which is the last-resort solution I'm trying to avoid.

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• Understanding what needs to be in place for a server to send outgoing email from a linux box

  - by Matt

  I am attempting to configure an openSuse 11.1 box to send outgoing email for a domain that the same server is hosting. I don't understand enough about smtp servers and the like to know what needs to be in place and working. The system already had Postfix installed, and I confirmed it was running via a > sudo /etc/init.d/postfix status I examined the Postfix config file in /etc/main.cf and configured a couple of items regarding the domain/host name and such, but left it largely default. I attempted to send an email from the command line with the following command: > echo "test 123" | mail -s "test subject" [email protected] Where differentdomain.com was not the same domain as the one best hosted on the server. However, the email never reaches the target account. Any suggestions? EDIT: In the postfix log, (/var/log/mail.info, there's nothing in .err) I see that postfix is trying to connect to what appears to be a different smtp server on our network, with a connection refused: connect to ourdomain.com.inbound15.mxlogic.net[our ip address]:25: Connection refused However, I can't figure out why it is 1) trying to connect to that server and 2) not just sending the messages itself... I mean, isn't postfix an smtp server? I did a grep -ri on ourdomain from /etc and see no configuration files anywhere telling it to do this. Why is it?

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• external postfix forwarding to zimbra server

  - by Marko

  I want to migrate from my current mail server (old_server) for my domain mydomain.com. old_server setup is Postfix+LDAP+Cyrus. Now I want to migrate my domain mail to Zimbra server (zimbra), but I am considering option to leave current mail server working in the first phase, and then to only have subset of email addresses to be forwarded to zimbra server. It seems that zimbra refers this in their documentation as 'edge MTA'. Current config mydomain.com MX: old_server <---------- smtp send ----------> smtp receive New config mydomain.com MX: old_server zimbra <------------------------------------------- smtp send ----------> smtp receive ---- forward ----> smtp receive I need following: old_server to receive mail for my domain as before, but for some of the email addresses I want them to be delivered to zimbra server. I should be able to determine which email addresses will be forwarded. I would like to avoid possible false spam detections for mails from mydomain.com due to this setup. Questions: How should I configure postfix on old_server to support this mail forwarding? To avoid false spam detection, can I have outgoing mail from mydomain.com to be sent by zimbra or should I use old_server? Is there anything extra I would need to do in order to avoid possibility of my outgoing mails being marked as spam on other servers?

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• Powershell: Execute exe on remote server and capture output

  - by user364825

  I am trying to script the execution of an installer on remote web servers. The installer in question is also a Windows Service that hosts NServiceBus. If RDP'd into the server, the application is installed by the following command: &"$theInstaller" /install /serviceName:TheServiceName The installer prints output about its progress registering the service and connecting to the database to stdout, among other things. This works fine from an RDP session, but when I execute it remotely via PS, I get a you-can't-do-this-over-the-network message if I execute it directly or via Invoke-Command -computername $theRemoteServer: System.IO.FileLoadException: Could not load file or assembly 'file://\\theRemoteServer\c$ \thePath\AutoMapper.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515) --- System.NotSupportedException: An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous. If this load is not intended to sandbox the assembly, please enable the loadFromRemoteSources switch. See http://go.microsoft.com/fwlink/?LinkId=155569 for more information. (Note: I added an additional "\" to the path in the first line in order to get it to show up correctly in the preview on this site.) This, and other DLLs, are loaded by the service, and the service's execution context cannot, apparently, be remotified. I have also tried using Invoke-WmiMethod, which does something, but it's not clear what, and the output from the installer is lost: Invoke-WMIMethod win32_process create '"$theInstaller" /install /serviceName:TheServiceName' -ComputerName $server (with and without cmd.exe /k before the intaller reference): __GENUS : 2 __CLASS : __PARAMETERS __SUPERCLASS : __DYNASTY : __PARAMETERS __RELPATH : __PROPERTY_COUNT : 2 __DERIVATION : {} __SERVER : __NAMESPACE : __PATH : ProcessId : ReturnValue : 9 How does one remotely execute such an EXE and capture the output? Thanks!

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• puppet master --compile logs errors to stdout

  - by danny

  I see a bug about this that was accepted and then closed a year ago: http://projects.puppetlabs.com/issues/3670 but I'm using puppet 2.7.14 and am getting the same issue. I'm trying to use "puppet solo" (i.e. just running puppet apply on each server to be configured) as I only have 2 or 3 servers in this project and adding another server as a puppetmaster would be completely overkill. Unless I'm mistaken, the best way to apply a node manually to a server is to do: puppet master --compile=mynode > catalog.json puppet apply --catalog catalog.json But the puppet master command outputs a couple of warnings and notices to stdout, mixed in with the desired json content. And it uses colored output so I can't just pipe it through egrep -v '^warning:' EDIT: I guess it's not too big of a deal to use grep - since puppet 2.7 pretty-prints the actual content and the warnings don't ever start with spaces, piping the output through egrep '^( |{|})' works So my questions are basically: Is there a better way than this to apply a puppet node without using a puppetmaster? I can't really find any good references online to using puppet without a puppetmaster, even though that seems like a perfectly reasonable thing to do for a small project. Is there a setting or flag that I'm missing that will get puppet master to stop being an asshole and send its errors to stderr instead of stdout? Or do I really have to turn off color logging, then grep to exclude warning: and notice: lines?

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• Postfix: change sender in queued messages

  - by ring0

  Following a complete re-installation we got a problem with the configuration: the sender address was wrong and some recipients (mail servers) rejected them. So there is a bunch of mails stuck in the Postfix queue. Ideally, a change of the sender address directly in the queued mails, and then flushing the queue would be optimal. I tried this answer that addresses this very problem. But messages don't seem to be easily modifiable in the version I have (2.11.0). For instance there is no /var/spool/mqueue dir, but, instead, /var/spool/postfix/... active bounce corrupt defer deferred dev etc flush hold incoming lib maildrop pid private public saved trace usr and the dir of interest is deferred. I tried to modify a few files there changing the wrong domain with the correct one (and was careful to ensure only those were changed). But then, those mails were moved to corrupt, meaning that a simple text change doesn't seem to work (done with vi). Any other cleaner way to change the sender in queued mails?

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• Why does `rpm` show 3 httpd packages, and which one provides the real httpd?

  - by Stefan Lasiewski

  I ran yum update on my CentOS5 webserver a few days ago. Today I just noticed that I have 3 httpd-* rpms! How can I end up with three RPMs for httpd (My other servers only have one httpd rpm). I want to make sure that my server has a patched, updated version of /usr/sbin/httpd. How can I tell which one of these packages provides the httpd binary at /usr/sbin/httpd? [root@node1 ~]# rpm -q httpd httpd-2.2.3-76.el5.centos httpd-2.2.3-78.el5.centos httpd-2.2.3-83.el5.centos [root@node1 ~]# /usr/sbin/httpd -V |grep version Server version: Apache/2.2.3 [root@node1 ~]# rpm -q httpd-2.2.3-76.el5.centos --list |grep -w /usr/sbin/httpd /usr/sbin/httpd /usr/sbin/httpd.event /usr/sbin/httpd.worker [root@node1 ~]# rpm -q httpd-2.2.3-78.el5.centos --list |grep -w /usr/sbin/httpd /usr/sbin/httpd /usr/sbin/httpd.event /usr/sbin/httpd.worker [root@node1 ~]# rpm -q httpd-2.2.3-83.el5.centos --list |grep -w /usr/sbin/httpd /usr/sbin/httpd /usr/sbin/httpd.event /usr/sbin/httpd.worker [root@node1 ~]# root@node1 ~]# rpm -q --provides httpd |grep -w httpd config(httpd) = 2.2.3-76.el5.centos httpd-mmn = 20051115 httpd = 2.2.3-76.el5.centos config(httpd) = 2.2.3-78.el5.centos httpd-mmn = 20051115 httpd = 2.2.3-78.el5.centos config(httpd) = 2.2.3-83.el5.centos httpd-mmn = 20051115 httpd = 2.2.3-83.el5.centos Update: Answering Mark Wagner's questions: [root@node1 ~]# rpm -q -f /usr/sbin/httpd httpd-2.2.3-76.el5.centos httpd-2.2.3-78.el5.centos httpd-2.2.3-83.el5.centos [root@node1 ~]# rpm -V httpd-2.2.3-83.el5.centos S.5..... c /etc/logrotate.d/httpd S.5..... c /etc/rc.d/init.d/httpd ....L... /var/www

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• When I ping Internet addresses like yahoo or Google, I get 2 reply packets and 2 lost packets.

  - by navi

  I have Airtel broadband and a Tata broadband connection. i have around 50 PCs connecting through an airtel broadband connection. Both are dsl connections with my phone line going into dsl modems and an Ethernet cable going from dsl modem directly into a switch. Currently, only airtel connection is connected with static IP on my private lan and using the airtel ISP DNS servers as DNS IP address and the default gateway is 192.168.1.1 (IP add. of the dsl modem). All PCs are connected in a work group. When in full use, my users complain of certain web pages are not opening. When I ping Internet addresses like Yahoo or Google I get 2 reply packets and 2 lost packets. I suspect that a single broadband connection is not able to sustain 50 simultaneous downloads/browsing. Is there any device which connect to both DSL and make one line so that its give me high speed simultaneous browsing. Help needed urgently. Thank you all to those who reply.

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• SQLVDI error - attempt to release mutex not owned by caller

  - by Chris W

  I've started getting some errors in the App event log of one of our database servers (Windows 2003 & SQL Server 2005). The nightly full database backups are completing successfully however immediately after the job success is written to the event log there is a run of entries that say: SQLVDI: Loc=CVDS. Desc=Release(ClientAliveMutex). ErrorCode=(288)Attempt to release mutex not owned by caller. There's five of these logged - the server itself has more than 20 databases on it which are all backed up successfully. The server is backed up by Bacula using a VSS backup. Has anyone got any ideas what would be causing the errors? They seem to have started after a re-boot on Friday to install some patches which included KB960089. Edit: After getting the errors for a few days they've now stopped without any action on my part other than letting the backups continue as they were. It may be a coincidence but they stopped after Bacula completed its weekly full rather than the daily incremental backup.

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