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Articles on configuring, trouble shooting and maintaining an email server with Unix/Linux Un-managed Servers.
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KB articles for Un-managed Linux and Unix servers
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There were 34 articles found in this category:

  1. questionIP Request Justification
    Codero dedicated servers and SmartServers include 4 IP Addresses with a maximum allocation of 16 IPs total. Any IP addresses requested beyond the IP provisioned with the server initially, must meet the criteria dictated by the RIRs (Regional Internet Registry). Since this server is in the Unite ...
  2. questionGetting Started With Your New Codero Server
    Getting Started With Your New Codero Server Congratulations, your new dedicated server with Codero has been completed and ready for your use. This document contains all of the information you will need to help you with the initial setup of your new server, as well as some tips and information ...
  3. questionI have just signed up for a dedicated server. What should I do now?
    Thank you for choosing Codero.com’s Dedicated Server services. This document explains the process of having your new dedicated server up and running. ORDER APPROVAL AND PAYMENT: For your own security, we require that each dedicated server order is approved by our Billing Department. If fo ...
  4. questionHow to install mytop for database performance monitoring:
    Mytop is a handy command line tool you can use to monitor queries on a single database. This can be helpful in troubleshooting slow mysql queries or identifying queries that are stuck open so you can optimize your code. To install on Centos: yum install mytop To install on Ubuntu: apt-get instal ...
  5. questionHow to block IP address in Linux via ssh:
    The following command will drop any packet coming from the IP address 1.2.3.4: iptables -I INPUT -s 1.2.3.4 -j DROP or you can use append iptables -A INPUT -s 1.2.3.4 -j DROP How Do I Block Subnet (xx.yy.zz.ww/ss)? Use the following syntax to block 10.0.0.0/8 on eth1 public interface: iptables ...
  6. questionRestore a database using PHPMYAdmin:
    Login to phpmyadmin. Click databases, and select the database that you will be importing your data into. You will then see either a list of tables already inside that database or a screen that says no tables exist. This depends on your setup. Across the top of the screen will be a row of tabs. ...
  7. questionHow to configure and run my own nameservers in WHM/Cpanel.
    DNS can be a complicated system and setting up your own nameservers can seem intimidating. This guide will skip past the technical details of how DNS works and provide you with the essential information you need to set up your nameservers in a single-server cPanel & WHM environment. It f ...
  8. questionHow to install/configure ClamAV on your server:
    1. Check to see if clamav is in your current repo's on the server. yum search clamav If it is, you can proceed to step 2. If not, you might need to install the epel repo for your server. You can use this link to do so. http://www.thegeekstuff.com/2012/06/enable-epel-repository/ 2. Install clamav ...
  9. questionHow to check the mail queue on your server
    Plesk: http://kb.mediatemple.net/questions/782/How+do+I+view+the+mail+queue+in+Plesk%3F#dv_40 qmail: /usr/local/psa/admin/bin/mailqueuemng -s // lists status of queue /usr/local/psa/admin/bin/mailqueuemng -R // lists the messages /usr/local/psa/admin/bin/mailqueuemng -D // delete queue postf ...
  10. questionHow to setup NTP via ssh:
    Procedure Login as the root user Type the following command to install ntp # yum install ntp Turn on service # chkconfig ntpd on Synchronize the system clock with 0.pool.ntp.org server: # ntpdate pool.ntp.org Start the NTP: # /etc/init.d/ntpd start
  11. questionHow to mount your recently slaved drive: (linux)
    If your server has recently been re-installed with a new hard drive and your old drive has been slaved so you can recover data, here is how to mount your old drive and access your files. NOTE: You will need to be logged in as root via a ssh shell to your server. fdisk -l Running fdisk -l will o ...
  12. questionHow to setup LAMP - Apache (with directory structure and virtual hosts), mysql, and php
    In this article you will learn how to setup Apache webserver with its directory structure. You’ll also learn how to setup virtual hosts with Apache, configure MySQL along with PHP so that you can use your web applications that require PHP along with MySQL for its database storage. Befor ...
  13. questionHow to setup nginx (with directory structure, virtual hosts, port forwarding), mysql, php, fastcgi
    In this article you will learn how to setup NGINX along with is directory structure. You’ll also learn how to setup virtual hosts for NGINX, port forwarding also known as reverse proxy and make NGINX with PHP-FastCGI, PHP and MySQL. This is also known is LEMP, L=Linux, E=Enginex (NGINX) ...
  14. questionHow to use public key authentication with SSH users
    In this article we are going to learn How to use public key authentication with SSH under Linux / UNIX environments. As of this article we are using Debian based operating system Ubuntu 12.04 LTS. Note: These instructions work under Ubuntu 10.04 LTS, Ubuntu 13, CentOS / RHEL / Redhat Enterp ...
  15. questionHow to use and install fail2ban
    In this article you will learn how to use and install fail2ban under Linux / UNIX environments. As of this article we are using Debian based operating system Ubuntu 12.04 LTS. Note: This works under Ubuntu 10.04 LTS, Ubuntu 13, CentOS / RHEL / Redhat Enterprise Linux, Debian 6 and Debian 7. ...
  16. questionHow to add an IP address to a Ubuntu server
    First, make a backup of the /etc/network/interfaces file. cp /etc/network/interfaces /root/interfaces.bak Edit the /etc/network/interfaces file. vi /etc/network/interfaces Add a section for as many IP addresses as you are adding. auto eth0:0 iface eth0:0 inet static address xx.xx.xx.xx netmask ...
  17. questionAnalyzing disk space usage on a linux server
    du -chs command To locate which directories may be using an excessive amount of disk space, you can find them by executing the du -chs command as shown. This will show how much disk space is used by each subdirectory. Note: Make sure you execute this command as root! Plesk example # du -chs /va ...
  18. questionHow to disable local mail delivery on WHM (cPanel) and Plesk
    In the event your mail is being hosted on a 3rd party server (i.e. gmail) you will want to disable local mail service to prevent your server from attempting to deliver mail locally. This will prevent any mail originating on your server from being "lost" due to being delivered to the wrong locat ...
  19. questionHow to whitelist an IP in cPHulk
    WHM uses a brute force protection system called cPHulk. Occasionally this can block you if you were to fail to correctly log in too many times. The number of failed logins allowed by cphulk is configurable by going to the Security Center section in WHM and then clicking on cPHulk Brute Force ...
  20. questionHow can I add a MAC address to my Serverportal account?
    Codero employs strict MAC security rules to prevent hijacking and/or other misuse of the network. In order to have network connectivity, your server or VM MAC address needs to be permitted to access your network. This is done automatically for dedicated servers, but in order to run Virtual Machi ...
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