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  • postfix smtp relay script

    - by Peter Sander
    I have a Postfix server and using it with Outlook (POP/SMTP). I have different sender addresses for an account. Now I want to configure a relay for a specific sender address. For example I have postfix for my main domain domain1.com. Now I have a sender address that is domain2.com. For that sender address I want that postfix to relay mail to a second SMTP server. I think that should be possible without problems. But the problem is that I have to create a SSH tunnel to the second server to connect to the SMTP server. But I cant use a persistent SSH connection so I want to know if it is possible that postfix executes some script before relaying the mail to the second SMTP server. I already found some information for executing a script when incomming emails but I only want to establish the SSH tunnel before postfix relays the mail to the second SMTP server.

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  • How can I get the real Emailaddress of a recipient?

    - by Boas Enkler
    a user in out Company has 2 mail-addresses on one Exchange-Mailbox. e.g test@... and test1@... the Primary SMTP-address off the Mailbox is test@. If I send a message to test1@, load it using EWS and parse through the TORecipients-Collection there is exactly one emailadress. But the mailaddress EWS gives to me is test@... and not test1@... where I sent the mail. My problem is, that all mails sent to test@ should be imported in our CRM using my program. All mails sent to test1@... must not be imported. In real life both mailaddresses are from my Boss. One is used for normal purposes the other one is for confidential e.g. from his lawyer. Does anyone know how I can get the real-emailaddress the message was sent to?

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  • CNAME Wildcards Server 2003

    - by Sean.C
    Hi Gents, I'm looking to set up a wildcard cname on a FQDN but cant seem to get it to work. This is what i'm trying to achive: A Record : domain.co.uk : my.ip.address.1 A Record : en.domain.co.uk : my.ip.address.1 cname : www.*.en.domain.co.uk : --> uk.domain.co.uk I'm reasonably new to all this kind of thing, so it's pretty probably pretty straight forward. The number of sites forbids the use of multiple IP addresses. Thanks for any assistance.

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  • How to stop IIS7 from listening on a specific IP address and port?

    - by webworm
    I am trying to install Apache on Windows Server 2008. The installation ends with a warning that the IP address I configured Apache to listen on cannot be bound. When I use netstat -a -p tcp to see if any processes are listening on the IP address and port I see several entires .. one of which shows as listening on 0.0.0.0:80. Here is a partial list of the output. Proto Local Address Foreign Address State TCP 0.0.0.0:80 MYSERVERNAME:0 LISTENING This looks to be IIS7 listening on all IP addresses on port 80. The confusing thing is that I stopped IIS7. All websites are shown as stopped. I tried iisreset /STOP as well as using the IIS7 Manager, yet something is still listening on 0.0.0.0:80. I have even made sure that every web site is bound to another IP address other than the one I want freed for Apache. Has anyone else run into this?

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  • Why is Internet access and Wi-Fi always so terrible at large tech conferences?

    - by Joel Spolsky
    Every tech conference I've ever been to, and I've been to a lot, has had absolutely abysmal Wi-Fi and Internet access. Sometimes it's the DHCP server running out of addresses. Sometimes the backhaul is clearly inadequate. Sometimes there's one router for a ballroom with 3000 people. But it's always SOMETHING. It never works. What are some of the best practices for conference organizers? What questions should they ask the conference venue or ISP to know, in advance, if the Wi-Fi is going to work? What are the most common causes of crappy Wi-Fi at conferences? Are they avoidable, or is Wi-Fi simply not an adequate technology for large conferences?

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  • Facebook doesn't work on computer, but work on mobile device, both use the same router

    - by sasa
    I have a very strange problem and I'm thinking that can be problem with dns or something similar, but not sure and don't know how to solve. My computer is connected to router and every site works fine except facebook (Chrome and Firefox). Chrome shows "Error 101 (net::ERR_CONNECTION_RESET): The connection was reset." But, on mobile device witch is connected to the same router facebook works fine (Fb application and Delphin browser). Pinging facebook works fine. Clearing cookies and cache didn't help. Also, I performed antivirus and antimalware scan and there is nothing. What can be a problem? Update: I'm also connect notebook on that wifi router, and on it works fine. nslookup facebook.com Server: UnKnown Address: 192.168.1.1 Non-authoritative answer: Name: facebook.com Addresses: 2a03:2880:2110:3f01:face:b00c:: 2a03:2880:10:1f02:face:b00c:0:25 2a03:2880:10:8f01:face:b00c:0:25 69.171.224.37 69.171.229.11 69.171.242.11 66.220.149.11 66.220.158.11

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  • What settings need to be changed to allow EC2 instances to use Amazon's Route 53 for DNS?

    - by ks78
    I have a number of Amazon EC2 instances, all running Ubuntu, which I'd like to configure to use Amazon's Route 53. I setup a script, following Shlomo Swidler's article, but ran into script-related issues, which were answered here. Now, I have the script working, but my instances are still not able to access Route 53's DNS. By this I mean, they are not able to resolve hostnames to IP addresses. My instances are currently configured with the DNS server IP address Amazon pushes out to them by default, does that need to be changed when using Route 53? I'm also IP-restricting my instances using the Security Groups. Could that be the problem? Is there a certain IP address or port I should open to allow communication with Route 53? It seems that DNS requests should be originating from my instances so the Security Groups shouldn't be an issue, but I've been wrong before. If anyone has any ideas, I'd really appreciate it.

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  • Declaring multiple ports for the same VirtualHosts

    - by user65567
    Declare multiple ports for the same VirtualHosts: SSLStrictSNIVHostCheck off # Apache setup which will listen for and accept SSL connections on port 443. Listen 443 # Listen for virtual host requests on all IP addresses NameVirtualHost *:443 <VirtualHost *:443> ServerName domain.localhost DocumentRoot "/Users/<my_user_name>/Sites/domain/public" <Directory "/Users/<my_user_name>/Sites/domain/public"> Order allow,deny Allow from all </Directory> # SSL Configuration SSLEngine on ... </VirtualHost> How can I declare a new port ('listen', ServerName, ...) for 'domain.localhost'? If I add the following code, apache works (too much) also for all other subdomain of 'domain.localhost' (subdomain1.domain.localhost, subdomain2.domain.localhost, ...): <VirtualHost *:80> ServerName pjtmain.localhost:80 DocumentRoot "/Users/Toto85/Sites/pjtmain/public" RackEnv development <Directory "/Users/Toto85/Sites/pjtmain/public"> Order allow,deny Allow from all </Directory> </VirtualHost>

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  • Questions about Domains and DNS

    - by ShoX
    Hi, I am totally new to the DNS and server hosting world and not quite sure what I need. I want to get a domain, forward it to my own server, so that the user sees example.com in the url bar and example.com/foo/bar will work. Depending on what subdomain it is, it should do different things (another base-directory at webserver, ftp, etc). Also my email should be able to be sent to and received by that server. What irritates me, is the fact, that in the A-record I can only list IP-addresses and no ports. So do I have to set up a nameserver on my own server? Or do I accomplish this via vhosts on my webserver? I would appreciate any help or link to a tutorial. I know how DNS works, know some basic apache-stuff, etc... so no need to explain that. Thanks

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  • Ubuntu: disable udev's persistent-net-generator.rules

    - by Luke404
    I'm using Ubuntu 12.04 LTS server edition and I am modifying /etc/udev/rules.d/70-persistent-net.rules to define my own mappings of ethernet interfaces to MAC addresses; that file is initially generated by rules in /lib/udev/rules.d/75-persistent-net-generator.rules at system installation time (or at the first boot, I actually don't know and it doesn't matter here). How can I be sure that my edited version will never ever be overwritten by anything? Removing the persistent-net-generator, as suggested on some websites, is not the Right Thing™ to do as told by comments in the file itself: it will be overwritten by any update of the udev package. I'm looking for a more formally correct way to disable it. Is it enough to just make sure that /etc/udev/rules.d/70-persistent-net.rules does exist? Maybe there are other events that could trigger its regeneration? (eg. adding or removing ethernet interfaces to the system?)

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  • Building an external list while filtering in LINQ

    - by Khnle
    I have an array of input strings that contains either email addresses or account names in the form of domain\account. I would like to build a List of string that contains only email addresses. If an element in the input array is of the form domain\account, I will perform a lookup in the dictionary. If the key is found in the dictionary, that value is the email address. If not found, that won't get added to the result list. The code below will makes the above description clear: private bool where(string input, Dictionary<string, string> dict) { if (input.Contains("@")) { return true; } else { try { string value = dict[input]; return true; } catch (KeyNotFoundException) { return false; } } } private string select(string input, Dictionary<string, string> dict) { if (input.Contains("@")) { return input; } else { try { string value = dict[input]; return value; } catch (KeyNotFoundException) { return null; } } } public void run() { Dictionary<string, string> dict = new Dictionary<string, string>() { { "gmail\\nameless", "[email protected]"} }; string[] s = { "[email protected]", "gmail\\nameless", "gmail\\unknown" }; var q = s.Where(p => where(p, dict)).Select(p => select(p, dict)); List<string> resultList = q.ToList<string>(); } While the above code works (hope I don't have any typo here), there are 2 problems that I do not like with the above: The code in where() and select() seems to be redundant/repeating. It takes 2 passes. The second pass converts from the query expression to List. So I would like to add to the List resultList directly in the where() method. It seems like I should be able to do so. Here's the code: private bool where(string input, Dictionary<string, string> dict, List<string> resultList) { if (input.Contains("@")) { resultList.Add(input); //note the difference from above return true; } else { try { string value = dict[input]; resultList.Add(value); //note the difference from above return true; } catch (KeyNotFoundException) { return false; } } } The my LINQ expression can be nicely in 1 single statement: List<string> resultList = new List<string>(); s.Where(p => where(p, dict, resultList)); Or var q = s.Where(p => where(p, dict, resultList)); //do nothing with q afterward Which seems like perfect and legal C# LINQ. The result: sometime it works and sometime it doesn't. So why doesn't my code work reliably and how can I make it do so?

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  • Disable IPv6 on Loopback address (Localhost, Computer name, ...)

    - by Greg Bray
    We tried installing a 3rd party software product on a new Windows 2008 R2 server and found that everything works except for accessing local services through loopback addresses such as localhost or the computer name (ex: VPS-Web which resolves to localhost). We are not using IPv6 and would like to disable it until the software is compatible. I tried using these instructions for disabling IPv6 on Windows 2008 R2 but it did not disable the protocol for localhost. Pinging localhost or VPS-Web will still return ::1: instead of 127.0.0.1. I can use ping localhost -4 to get the correct address, but IPv6 takes precedent over IPv4 so the 3rd party software only gets the IPv6 address.

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  • qmail questions - whitelisting and relays

    - by Richard
    My new server runs qmail, which I've never used before. There is no inbound mail on the server (all the clients have mail hosted elsewhere, but some systems on the server send mail. I'm about to move a client there who has several parked domains, and looking at the smtp log, the server is already blocking many attempts to relay spam using one of the parked domain names (probably because a related domain is already hosted there). How do I ensure those mails stay blocked, while allowing legitimate addresses to send out? Server OS is CentOS and hosting software is Kloxo.

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  • Outlook - Out Of Office can't set

    - by derjur
    Exchange 2007, Outlook 2010 Error when setting Out Of Office (Automatic Replies) from Outlook: Your automatic reply settings cannot be displayed because the server is currently unavailable. Try again later. Setting this through OWA works fine. Autodiscover is working, and all addresses are resolvable through DNS. Outlook profile created from scratch. Anonymous access disabled for EWS/OWA (IIS on Exchange box). I'm out of steam for troubleshooting. Any ideas?

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  • Server 2012 R2 DNS Conditional forwarding not working reliably, possible caching issue?

    - by Matt
    I have a bit of a home lab setup with a domain controller that is acting as the DNS server for my network. For everything, it's working fine and forwards external DNS requests to my ISP. The household recently wanted to get Netflix going and it seemed a DNS option was better than a VPN to get around the region locking, so I signed up for unblock-us.com Since I have a Windows DNS server I thought I'd be clever and make use of conditional forwarders and added the Netflix domain to the list. Initially this worked well and all devices on the network could now access Netflix, however after about an hour going to the Netflix site would result in a page cannot be found. Doing an nslookup of Netflix.com from my PC resulted in it not returning any IP addresses. As a test, I deleted the Netflix domain from the DNS servers cache and things started working again - devices could get to the site again however the same thing happens again after around half an hour to an hour. Have I missed something here that's causing it to stop working?

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  • IPv6 6to4 on Windows Server

    - by Graham Wager
    I'm looking for a relatively simple guide to setting up IPv6 properly on a home network. This network currently has a server (Windows Server 2008R2) running RRAS that establishes connectivity to the internet using a demand-dial PPPoE connection and handles the NAT. It also hosts a DNS server and DHCP. My ISP does not support IPv6, but I have a static IPv4 address. I've read about 6to4 and signed up at tunnelbroker.net, but quickly felt out of my depth. How do I configure my network to use it, and how I should configure my DHCP server with regards to IPv6 addresses?

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  • apxs cannot install mod_cloudflare on centos

    - by Adam
    [ Linux - CentOS - Apache 2.2 - mod_cloudflare - apxs2 ] I have changed my nameservers to point to CloudFlare. The problem is that all the IP addresses are coming in as CloudFlare's. This is no good, because I have to monitor and block some specific traffic. mod_cloudflare is supposed to resolve this but I have been unable to get this installed. The command in the documentation uses apxs2. I can't figure out how to install this, or if it just means for 'apache 2.4'. I'm running 2.2.3, and I can use 'apxs'. When I run: apxs -aic mod_cloudflare.c I get the error apxs:Error: Command failed with rc=65536 Does this mean I need apxs2 or something else? How do I get mod_cloudflare working on my server? I appreciate any help, the documentation is vague and limited.

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  • Need help completing this Powershell script with some Exchange 2010 commands.

    - by Pure.Krome
    Hi folks. the following powershell script lists all the email aliases I have for a single mailbox. >$mbx = Get-Mailbox myuser >$mbx.EmailAddresses and that lists all the addresses. eg. SmtpAddress : [email protected] AddressString : [email protected] ProxyAddressString : smtp:[email protected] Prefix : SMTP IsPrimaryAddress : False PrefixString : smtp SmtpAddress : [email protected] AddressString : [email protected] ProxyAddressString : smtp:[email protected] Prefix : SMTP IsPrimaryAddress : False PrefixString : smtp SmtpAddress : [email protected] AddressString : [email protected] ProxyAddressString : SMTP:[email protected] Prefix : SMTP IsPrimaryAddress : True PrefixString : SMTP Now to add a new email address, I do the following poweshell command :- $mbx.EmailAddresses += "myEmailAddress.com" $mbx | Set-Mailbox So i'm not sure how i can use the foreach to remove each address? I tried:- @mbx.EmailAddresses | foreach { $mbx.EmailAddresses -= $._SmtpAddress } and that failed miserably. That's my first attempt of PS script, ever :P Can anyone help?

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  • Route an IP from WAN to a host on LAN on OpenWRT

    - by Zsub
    EDIT: I know how to use NAT, I specifically want the server to be reachable on two IP's, one private, one public, with the firewall of the OpenWRT in between, if feasible. At the office we have recieved a /29 from our ISP. The first address is reserved for their endpoint, so I'm free to use five addresses. We run a local network, so of course there is a router in between running OpenWRT to provide all hosts with (W)LAN (dhcp from a private range). However, we also have a server running OS X Server 10.6 (Snow Leopard) and I'd like that server to be accessible both from the LAN using a private IP as well as from the WAN on it's own public IP. Point of note is that the server only has one network port, so multiple NICs is not an option, unfortunately. How would I go about doing this?

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  • How to set up Google Apps (mail) MX Records on DNSMadeEasy (screen shot included)

    - by user41847
    I am attempting to complete google's mail MX setup. I would link, but new users can't have two links, and I think the following img is more important. This is what my input options are for DNS Made Easy, which manages my domain: http://img94.imageshack.us/img94/5662/dnsmadeeasy.gif I would like to confirm that I understand the fields correctly. It is my understanding that I am supposed to: Leave Name (Host) Blank Set Data to ASPMX.L.GOOGLE.COM. (and repeat for each of the server addresses provided by google) Set the MX level to what Google has in "Priority" column Set TTL as high as possible Did I get it right? The nightmare scenario is that I screw up, and bring everyone's mail down :P Thanks in advance for your time.

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  • lots of dns requests from China, should I worry?

    - by nn4l
    I have turned on dns query logs, and when running "tail -f /var/log/syslog" I see that I get hundreds of identical requests from a single ip address: Apr 7 12:36:13 server17 named[26294]: client 121.12.173.191#10856: query: mydomain.de IN ANY + Apr 7 12:36:13 server17 named[26294]: client 121.12.173.191#44334: query: mydomain.de IN ANY + Apr 7 12:36:13 server17 named[26294]: client 121.12.173.191#15268: query: mydomain.de IN ANY + Apr 7 12:36:13 server17 named[26294]: client 121.12.173.191#59597: query: mydomain.de IN ANY + The frequency is about 5 - 10 requests per second, going on for about a minute. After that the same effect repeats from a different IP address. I have now logged about 10000 requests from about 25 ip addresses within just a couple of hours, all of them come from China according to "whois [ipaddr]". What is going on here? Is my name server under attack? Can I do something about this?

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  • Mounting Gluster Volumes

    - by Roman Newaza
    I have created Hosted Zone with 2 IP addresses of Gluster Cluster, both IP are returned by dig. After mounting Gluster, I cannot ls mount point as it takes long time. mount shows me it's mounted, but df doesn't. Finally, I have this: ls: cannot access /mnt/storage: Transport endpoint is not connected. But if I mount it with the one of the IP, no problem - volume contents is accessible OS: Ubuntu 11.10 GlusterFS: 3.2.6 Log: http://pastie.org/private/2jgp4h1hnqgzych3djtg I have can telnet storage from client - ports are open.

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  • How to route traffic through a specific SOCKS proxy on a per-app basis?

    - by GJ.
    I'm running a certain desktop app (actually via AIR if it makes any difference) which doesn't have any built-in proxy configuration settings. I need to get all traffic just from this app directed through a secure SOCKS proxy. This implies I can't use the global network preferences, as these would affect many other apps. Is there any way to force all network communication through a given SOCKS proxy on a per-app basis? It would also be helpful to know if there's a way to perform such routing globally, based on specific IP addresses (as this could allow for some reasonable workaround).

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  • Weird (?) issue with Exchange Forwarding

    - by abszero
    Hello everyone. Here is the long and short of it: the company I work for was purchased by another company who uses Gmail for domains as their email provider. We use an in house Exchange box. No big deal, I dropped into Active Directoy and created several Contact objects that represented our new email addresses at Gmail. I then went through each employees record and have their mail set to forward to this new address and not deliver locally. So I am forwarding email for me@domain1 to me@domain2 and this works great as long as I don't send an email from me@domain2 to me@domain1. If I log into my personal Gmail account and send an email to me@domain1 the email is properly forwarded to me@domain2. The mail coming from me@domain2 to me@domain1 seems to just get lost in the ether. Have I done something wrong or is this a quark with Exchange? Thanks!

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  • Do I need a VPN to secure communication over a T1 line?

    - by Seth
    I have a dedicated T1 line that runs between my office and my data center. Both ends have public IP addresses. On both ends, we have a T1 routers which connect to SonicWall firewalls. The SonicWalls do a site-to-site VPN and handle the network translation, so the computers on the office network (10.0.100.x) can access the servers in the rack (10.0.103.x). So the question: can I just add a static route to the SonicWalls so each network can access each other with out the VPN? Are there security problems (such as, someone else adding the appropriate static route and being able to access either the office or the datacenter)? Is there another / better way to do it? The reason I'm looking at this is because the T1 is already a pretty small pipe, and having the VPN overhead makes connectivity really slow.

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