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  • Where to set catch-all address in Postfix (virtual mailboxes in affect)

    - by Cem
    I successfully configured Postfix to deliver messages to virtual mailboxes. I can set aliases and pipes inside /etc/postfix/virtual and mailboxes inside /etc/postfix/virtual_mailbox files. However, whenever I set a catch-all domain and point to a remote email address, it overrides all other virtual mailboxes and virtual aliases set in postfix. How can I set a catch-all forwarding to the remote email address when virtual mailbox is enabled? I set catch-all like this: @mydomain.com [email protected] Thanks for your help!

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  • How to improve the HTML formatting in Evolution mail client

    - by Tom
    I have a question about viewing HTML emails in the Evolution mail client. Basically, I am receiving some emails that look lovely in Thunderbird but not in Evolution because the HTML rendering of Evolution isn't as advanced. Does anyone know how to improve the HTML rendering of Evolution? e.g. a plugin, tip, code patch, etc... The closest I've got is to right-click the email, "Save As...", save as a html file, then open in Firefox. Not exactly streamline! What emails can't it display well? We use the subversion revision control system which is set up to send an email whenever someone commits via svnnotify all nicely coloured via the --handler HTML::ColorDiff -d parameter. When Evolution fails to use the colours, I find it very had to read the raw diff.

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  • High server load - [jbd2/md1-8] using 99.99% IO

    - by Alex
    I've been having spike in load over the last week. This usually occurs once or twice a day. I've managed to identify from iotop that [jbd2/md1-8] is using 99.99 % IO. During the high load times there is no high traffic to the server. Server specs are: AMD Opteron 8 core 16 GB RAM 2x2.000 GB 7.200 RPM HDD Software Raid 1 Cloudlinux + Cpanel Mysql is properly tuned Apart from the spikes, the load usually is around 0.80 at most. I've searched around but can't find what [jbd2/md1-8] does exactly. Has anyone had this problem or does anyone know a possible solution? Thank you. UPDATE: TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 16:05:36 399 be/3 root 0.00 B/s 38.76 K/s 0.00 % 99.99 % [jbd2/md1-8]

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  • How to prevent Ubuntu from combining networks on 2 NIC server?

    - by SolarPower
    I've got a Ubuntu Server 10.10 with 2 network interfaces with a cable plugged into both going to switches on completely different networks with different routers. One network is the 10.1.10.X network with a separate gateway/router - the server has an IP of 10.1.10.50 with the gateway IP of 10.1.10.1. The other interface is 10.2.10.X, IP 10.2.10.50, gateway 10.2.10.1. All my Mac machines are on the 10.2.10.X network, and all servers on the 10.1.10.X. The ONLY connection between the two is this machine. From a Mac in my office, I CANNOT ping any computer on the 10.1.10.X network except the Ubuntu machine I'm talking about. However, under the Shared column in Finder, I can see every server on the other network listed. That makes me believe that somehow this Ubuntu machine is letting certain requests span both networks, which is a security problem. Hope this is enough info.

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  • How to copy remote machines text to local machines clipboard through SSH?

    - by recluze
    I work on a remote machine through ssh. I have a very large text file there (approx. 500 lines) which I usually need to modify, then copy the contents of that file and paste it in my local browser. The way I usually do this is cat filename and then select/copy the ssh output. That takes a lot of time. I was wondering if there is a utility that will put the remote file's contents in my local clipboard.

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  • More than 3 seconds "Initial Connection" time (webpagetest.org)

    - by George Tasioulis
    I'm having a weird issue with a vBulletin forum, on a 2? Xeon E5645 w/ 16GB RAM, cPanel and LiteSpeed webserver; It takes too long to start loading... When I tested it with webpagetest.org I saw that for every request there's a 3 second "Initial connection" delay, which I don't know why is happening. Here's a screenshot: CPU Load is between 0.03 and 0.05, I've got several GB of free RAM, practical no I/O activity, and this delay can occur even with only one visitor on the forum. Where do you suggest I start searching? What could be the reason for this kind of delay? I don't think it's the webserver, or the forum because there's another website on the server (total 2 sites) which is WordPress based, and has exactly the same issue with the 3 second initial connection delay. I believe it's OS related, but need a clue on where to start looking. Thanks in advance :)

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  • iftop Shows Lots of Mysterious Connections - Not Showing in netstat

    - by HOLOGRAPHICpizza
    I've just stopped all pretty much all services except sshd on my server (Ubuntu Server 10.04), and when I run iftop I get output that looks like this: 12.5Kb 25.0Kb 37.5Kb 50.0Kb 62.5Kb mqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqqvqqqqqqqqqqqqqqqqq flash.gateway.2wire.net:ssh <=> 172.16.1.151:60405 1.75Kb 1.54Kb 2.22Kb flash.gateway.2wire.net:21095 <=> 69.127.29.20:32582 536b 107b 27b flash.gateway.2wire.net:21095 <=> 190.164.122.134:13557 0b 105b 26b flash.gateway.2wire.net:21095 <=> 79.165.212.195:45138 0b 105b 26b flash.gateway.2wire.net:21095 <=> 151.42.15.151:9031 0b 72b 18b flash.gateway.2wire.net:21095 <=> 88.185.120.179:51413 0b 0b 49b flash.gateway.2wire.net:21095 <=> 178.120.152.97:25924 0b 0b 29b flash.gateway.2wire.net:21095 <=> 109.110.217.77:27868 0b 0b 26b flash.gateway.2wire.net:21095 <=> 84.13.201.90:16509 0b 0b 26b flash.gateway.2wire.net:21095 <=> 171.7.125.224:11777 0b 0b 26b flash.gateway.2wire.net:21095 <=> 115.177.164.170:21360 0b 0b 26b flash.gateway.2wire.net:21095 <=> 50.88.126.18:25540 0b 0b 25b flash.gateway.2wire.net:21095 <=> 223.206.230.163:13431 0b 0b 25b flash.gateway.2wire.net:21095 <=> 78.144.187.26:24515 0b 0b 25b flash.gateway.2wire.net:21095 <=> 83.20.61.211:27572 0b 0b 25b flash.gateway.2wire.net:21095 <=> 82.134.151.42:18448 0b 0b 18b flash.gateway.2wire.net:21095 <=> 126.117.95.247:25316 0b 0b 18b flash.gateway.2wire.net:21095 <=> 116.202.65.230:9044 0b 0b 18b flash.gateway.2wire.net:21095 <=> 88.120.63.205:51413 0b 0b 17b qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq TX: cumm: 61.6KB peak: 8.00Kb rates: 1.59Kb 1.38Kb 2.04Kb RX: 18.4KB 1.64Kb 696b 549b 640b TOTAL: 80.0KB 9.64Kb 2.27Kb 1.92Kb 2.66Kb This is the first part (not the unix socket part) of the output of netstat -a: Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 *:ssh *:* LISTEN tcp 0 0 *:55677 *:* LISTEN tcp 0 0 flash.gateway.2wire:ssh 172.16.1.151:60405 ESTABLISHED tcp 0 48 flash.gateway.2wire:ssh 172.16.1.151:60661 ESTABLISHED tcp6 0 0 [::]:ssh [::]:* LISTEN udp 0 0 *:37790 *:* What could all those strange connections on port 21095 be? And why would they not show up in netstat?? Any advice would be greatly appreciated.

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  • KVM CLI install for CentOS 6.3 defaults to Minimal Install

    - by i.h4d35
    So I now I've installed KVM (and its associated tools and packages- libvirt, VMM etc.). On the GUI (i.e using the VMM), installation works as its supposed to. However, when I try to create a VM using the command line interface, the OS (I am working with CentOS 6.3) defaults to a Minimal Install instead of giving me options to choose from at the time of installation. I am trying to install using the following command: virt-install \ --connect qemu:///system \ --virt-type kvm --name testVM2 \ --ram 512 --disk path=/var/lib/libvirt/images/testVM2.img,size=8 --vnc \ --cdrom /media/db18de8e-0853-49fb-80de-5c794d58a46f/CentOS-6.3- x86_64-bin-DVD1.iso \ --network network=default Specifying the OS-type or the OS-variant parameters doesn't make a difference. Is there something that I am missing out on or some other parameter that I must specify? Thanks in advance.

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  • Rate limit a wireless interface

    - by Jamie Hankins
    I have access to my routers SSH and IPTables. I want to rate limit my guest network to 1Mb/s so they can't guzzle my bandwidth. rai1 RTWIFI SoftAP ESSID:"GuestNetwork" Nickname:"" Mode:Managed Channel=6 Access Point: :F9 Bit Rate=300 Mb/s wdsi0 RTWIFI SoftAP ESSID:"YouCan'tTouchThis" Nickname:"" Mode:Managed Channel=6 Access Point: :F8 Bit Rate=300 Mb/s wdsi1 RTWIFI SoftAP ESSID:"YouCan'tTouchThis" Nickname:"" Mode:Managed Channel=6 Access Point: :F9 Bit Rate=300 Mb/s wdsi2 RTWIFI SoftAP ESSID:"YouCan'tTouchThis" Nickname:"" Mode:Managed Channel=6 Access Point: Not-Associated Bit Rate:300 Mb/s wdsi3 RTWIFI SoftAP ESSID:"YouCan'tTouchThis" Nickname:"" Mode:Managed Channel=6 Access Point: Not-Associated Bit Rate:300 Mb/s I'm just wondering the command I need to limit it. I tried the iwconfig limit command but it failed. Thanks

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  • Determine the time difference between two linux servers

    - by Paul
    I am troubleshooting a latency network issue on a network. It is probably a nic or cabling issue, but while I was going through the process of figuring it out, I was looking at the timings of a ping packet leaving a network card and arriving at another server. Both linux. So I have tcpdump running on both, and I issue a ping from one to the other, and back again, and looking at the timing differences might have shed light on where the latency is coming from. It is an academic exercise now, as I need to eliminate some more fundamental causes, but I was curious as to how this could be achieved. Given that ntpd is installed and running on two servers, how can I confirm the current time discrepency between the two servers, to whatever level of accuracy is possible - given that we are talking about latency on a local lan, which is ideally a millisecond or so. NTP itself is accurate to a couple of ms under good conditions, and as both servers are in the same environment, they should (presumably) achieve a similar level of accuracy, and so should have a time discrepency between them of a only few ms - but how can I check this?

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  • F3-F5 keys incorrectly behaving as audio keys

    - by obvio171
    I don't know if this is a configuration issue or a hardware issue, but I have a Kinesis Advantage USB keyboard and for some reason the F3-F5 keys aren't responding as they used to. They don't respond to anything and, when I tried using F5 on Emacs, it said <XF86AudioNext> is undefined, so I guess it's a weird mapping problem. Any idea how I could remap them to the original meaning?

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  • Machine check events logged

    - by GoldenNewby
    In /var/log/messages, this error occurred: Sep 19 13:18:15 wdc kernel: [2772302.630416] Machine check events logged Shortly there after, the entire server became unresponsive. This is in the log of the Dom0 for a Xen Server (running the latest version on Debian Squeeze). Can anyone shed some light on what this error means? Should I be ordering new hardware? Edit: Also, it seems to imply it logged something, where can I find that?

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  • Debugging Samba/CUPS printer sharing with Windows

    - by mrdrbob
    I've got a HP Deskjet hooked up to a Slackware 12.2 box. I've got CUPS set up and can print a test page from the box just fine. I've also got Samba set up and have a couple file shares that work fine. I'm trying to share that HP Deskjet out via Samba, but I can't get it to show up in any Windows system. I see the server and its file shares in Windows networking, but when I open the Printers, no printer shows up. Running net view \\servername from the command line lists the file shares, but no printers. Here's the pertinent part of my smb.conf, if that helps: [global] workgroup = HOMENET security = share hosts allow = 192.168.1. 192.168.2. 127. load printers = yes printcap name = cups printing = cups log file = /var/log/samba.%m max log size = 50 [printers] comment = All Printers path = /var/spool/samba browseable = no public = yes writable = no printable = yes guest only = yes Can anyone give me some pointers as to where to start looking for potential causes? Update: Running testparm shows no errors. Here's the output (minus the file shares): [global] workgroup = HOMENET security = SHARE log file = /var/log/samba.%m max log size = 50 printcap name = cups hosts allow = 192.168.1., 192.168.2., 127. [printers] comment = All Printers path = /var/spool/samba guest only = Yes guest ok = Yes printable = Yes browseable = No

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  • How do I apply multiple subnets to a server with one NIC?

    - by Cosban
    I am trying to route multiple IPs through one physical NIC on my dedicated server for use with Proxmox KVM VMs. I have a dedicated server which is currently running Debian 4.4.5-8 with 3 available ip addresses for use, which will be displayed as 176.xxx.xxx.196 (main), 176.xxx.xxx.198 (on same subnet as main) and 5.xxx.xxx.166 (different subnet). I am currently trying to route the third IP address with the dedi for use with a vps that I have set up using proxmox v2.x but am having a really, really hard time doing so. Virtual interfaces binding the additional IP addresses work as expected, ruling out external routing problems. The provider has given the following information for the IP addresses on the main subnet: gateway: 176.xxx.xxx.193 netmask: 255.255.255.224 broadcast: 176.xxx.xxx.223 As well as the following information for the IP address on the second subnet: gateway: 5.xxx.xxx.161 netmask: 255.255.255.248 broadcast: 5.xxx.xxx.167 Everything I've tried with /etc/network/interfaces has either not worked, or has rendered the network completely useless. This is the current state of the file, which has the secondary IP address working on the same subnet as well as IPv6 working, but not the second subnet. # Nativen IPv6 Schnittstelle iface eth0 inet6 manual # Bridge IPv4 Schnittstelle (176.xxx.xxx.193/27) auto vmbr0 iface vmbr0 inet static address 176.xxx.xxx.196 netmask 255.255.255.224 gateway 176.xxx.xxx.193 broadcast 176.xxx.xxx.223 bridge_ports eth0 bridge_stp off bridge_fd 0 bridge_maxwait 0 post-up ip addr add 176.xxx.xxx.198/27 dev vmbr0 auto vmbr1 iface vmbr1 inet static address 5.xxx.xxx.166 netmask 255.255.255.248 gateway 5.xxx.xxx.161 broadcast 5.xxx.xxx.167 bridge_ports eth0 bridge_stp off bridge_fd 0 bridge_maxwait 0 post-up ip addr add 5.xxx.xxx.166/27 dev vmbr1 # Bridge IPv6 Schnittstelle (Reichweite: xxxx:xxxx:xxxx:xxxx:xxxx:xxxx::/64) iface vmbr0 inet6 static address xxxx:xxxx:xxxx:xxxx:xxxx:xxxx netmask 64 up ip -6 route add xxxx:xxxx:xxxx:xxxx:xxxx:xxxx dev vmbr0 down ip -6 route del xxxx:xxxx:xxxx:xxxx:xxxx:xxxx dev vmbr0 up ip -6 route add default via xxxx:xxxx:xxxx:xxxx:xxxx:xxxx dev vmbr0 down ip -6 route del default via xxxx:xxxx:xxxx:xxxx:xxxx:xxxx dev vmbr0

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  • Bad I/O scheduler?

    - by user62367
    os: up-to-date Fedora 14. Working as a "normal desktop". It's doing very well, but if i start VirtualBox, and e.g.: install a guest on it, it just "freezez". I mean if there are disk activities on a VirtualBox guest, then the computer becomes unrespondable..even the mouse is laggin for about 50 minutes.. What could be the bottleneck? What could be the problem? If anyone has any tips/howtos to speed it up, please help! It has a normal 2,5" HDD, with 5400 RPM. Does it worth for me if i buy a 2,5" HDD with 7200 RPM? T7200 cpu, 4 GByte RAM, "vm.swappiness = 0". Thank you!

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  • second ip address on the same interface but on a different subnet

    - by fptstl
    Is it possible in CentOS 5.7 64bit to have a second IP address on one interface (eg. eth0) - alias interface configuration - in a different subnet? Here is the original config for eth0 more etc/sysconfig/network-scripts/ifcfg-eth0 # Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express DEVICE=eth0 BOOTPROTO=static BROADCAST=192.168.91.255 HWADDR=00:1D:09:FE:DA:04 IPADDR=192.168.91.250 NETMASK=255.255.255.0 NETWORK=192.168.91.0 ONBOOT=yes And here is the config for eth0:0 more etc/sysconfig/network-scripts/ifcfg-eth0:0 # Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express DEVICE=eth0:0 BOOTPROTO=static BROADCAST=10.10.191.255 DNS1=10.10.15.161 DNS2=10.10.18.36 GATEWAY=10.10.191.254 HWADDR=00:1D:09:FE:DA:04 IPADDR=10.10.191.210 NETMASK=255.255.255.0 NETWORK=10.39.191.0 ONPARENT=yes How would the resolv.conf file should change since there are two different gateways? Any other change needed?

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  • Elinks and flash

    - by bajki
    Hello everybody, is there a possibility to "use" flash based objects with elinks ? I mean, i have an online flash based multiplayer game ( http://haxball.appspot.com ) and i want to connect to game with elinks installed on my shell server to create an always-present game room. To do it, i need a terminal-based webbrowser with flash support. There is an elinks installed so it would be great if there is such a possibility in it. Any ideas? Thanks, Mike

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  • correct routing for multiple devices

    - by helmi
    I have Debian Lenny machine with 3 interfaces enabled (eth0-2), and I have problems as follow. eth1 is connected to a router and this router has portforwarding for port80. eth2 is connected direct to the internet If I open a website hosted on my system via the router it works fine. If I try to open the same via the eth2 connetion it does not! tshark shows incomming trafic on eth2 but nothing goes out there. iptabes accepts all My routing table: Ziel Router Genmask Flags Metric Ref Use Iface 10.9.0.2 * 255.255.255.255 UH 0 0 0 tun0 212.236.24.128 * 255.255.255.224 U 0 0 0 eth2 192.168.1.0 * 255.255.255.0 U 0 0 0 eth1 192.168.0.0 * 255.255.255.0 U 0 0 0 eth0 10.9.0.0 10.9.0.2 255.255.255.0 UG 0 0 0 tun0 default 192.168.1.1 0.0.0.0 UG 0 0 0 eth1 default 212.236.024.129 0.0.0.0 UG 0 0 0 eth2 default 192.168.0.1 0.0.0.0 UG 0 0 0 eth0

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  • One server, Two APC UPS on redundant power supplies : How to trigger shutdown ?

    - by Falken
    I have a server racked and its redundant power supplies plugged in two APC Smart-UPS 3000 XLM. Each UPS is connected to two different mains power sources. Two instances of apcupsd are running, each one connected to its own UPS. They can both detect when an UPS is on Battery, and each UPS can then trigger a shutdown on the server. Question is : How NOT to shutdown if ONLY ONE UPS runs out of battery ? Note : Smart-UPS 3000 XLM has a "Power Sync" Function that is able to connect to its peer and detect its status. But when I pulled the plug out of one of them, the Shutdown order was sent anyway. I'm thinking about modifying the shutdown scripts to check with "apcaccess" if the other ups is down. Any experience on this would be appreciated !

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  • What does "link to unknown" mean?

    - by Question Overflow
    I just upgraded my server to Fedora 17 which made a switch of my bootloader from GRUB Legacy to GRUB2. There are two symbolic links in the /etc folder that points to the files grub.conf and grub.cfg in /boot/grub and /boot/grub2 respectively. Though the targets seem correct, the link icons are displaying an X status which seems to indicate that the links are broken. Upon right-clicking the property type, it states "link to unknown". The file size of the link corresponds exactly with the file size of the target file, so, why does the links appear to be broken? The image of the link icons: As requested, the following are the outputs from the commands: $ ls -l /etc/grub.conf lrwxrwxrwx. 1 root root 22 Jul 14 2011 /etc/grub.conf -> ../boot/grub/grub.conf $ ls -l /etc/grub2.cfg lrwxrwxrwx. 1 root root 22 Dec 10 18:57 /etc/grub2.cfg -> ../boot/grub2/grub.cfg

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  • Bash Script Exits su or ssh Session Rather than Script

    - by Russ
    I am using CentOS 5.4. I created a bash script that does some checking before running any commands. If the check fails, it will simply exit 0. The problem I am having is that on our server, the script will exit the su or ssh session when the exit 0 is called. #!/bin/bash # check if directory has contents and exit if none if [ -z "`ls /ebs_raid/import/*.txt 2>/dev/null`" ]; then echo "ok" exit 0 fi here is the output: [root@ip-10-251-86-31 ebs_raid]# . test.sh ok [russ@ip-10-251-86-31 ebs_raid]$ as you can see, I was removed from my sudo session, if I wasn't in the sudo session, it would have logged me out of my ssh session. I am not sure what I am doing wrong here or where to start.

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  • Clients didn't switch to secondary DNS server during fail over

    - by The Digital Ninja
    I have two internal dns servers set up and all my servers have both of them in the resolv.conf Our main dns server went down and suddenly no server could see each other. I edited a few of the servers resolv.conf manually and committed out the first (down) dns server and that machine would instantly be able to ping again. What did I do wrong, does it not auto switch to the secondary dns server when it times out? # File managed by puppet nameserver 192.168.146.100 nameserver 192.168.159.101 ;nameserver 72.14.188.5 domain example.com search example.com

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