This is the website for one stop CentOS Linux Server installation guide and administration tips. http://www.1a-centosserver.com ComputerSoftware+InternetOS © 2003-2008 Sun, 17 Jan 2010 14:16:23 +0800 me@1a-centosserver.com Wed, 17 Mar 2010 10:16:19 +0800 rookie.engineer@gmail.com This is troubleshooting guide to solve iRedMail's Solving Recipient address rejected: Domain not Found issue. http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-customization-1-solving-recipient-address-rejected-Domain-not-Found-issue.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-customization-1-solving-recipient-address-rejected-Domain-not-Found-issue.php Sun, 1 Aug 2010 12:20:00 +0800 Want to Turn Off Greylisting and Blacklisting for iRedMail? This guide show a simple way to bypass both Greylisiting and Blacklisting function for iRedMail http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-customization-2-iRedMail-Disable-Greylisiting.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-customization-2-iRedMail-Disable-Greylisiting.php Sun, 1 Aug 2010 12:05:00 +0800 We will dicuss on customization on iRedAdmin, PhpMySQLadmin, PhpLdapAdmin,Roundcubemail to run on diffrerent IP and Port Services http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-customization-3-customised-web-services-on-different-ports.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-customization-3-customised-web-services-on-different-ports.php Sun, 1 Aug 2010 12:05:00 +0800 This is Part 9 Postfix Mail Server Installation. This chapter we dicuss on how to use FecthMail on CentOS for downloading /fetching email from another mailserver http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part9.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part9.php Sun, 1 Aug 2010 12:00:25 +0800 In this chapter, you will some useful information for fine tuning Postfix Mail Queue. By modifying some Postfix Setting such as queue_run_delay, maximal_queue_lifetime, minimal_backoff_time, can enhance the mail queue process http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part8.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part8.php Sun, 1 Aug 2010 12:00:25 +0800 In this chapter, we are sharing with various testing method you can use to test your newly setup anti spam solution http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-spam-testing.php http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-spam-testing.php Sun, 4 Jul 2010 12:00:25 +0800 This chapter discuss on how to remove "This message has been checked by ESVA and is believed to be clean." footer at the bottom of the email http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-remove-ESVA-signature.php http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-remove-ESVA-signature.php Tue, 29 Jun 2010 12:00:25 +0800 In some situation, grey listing is not suitable our enviroment easpecially when some old/misconfigured servers that do not retry to send fuctions. We will dicuss how to bypass the greylisting function in ESVA http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-disable-grey-listing.php http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-disable-grey-listing.php Mon, 28 Jun 2010 12:00:25 +0800 In this chapter, we will dicuss how to customize ESVA to handle SMTP relay for multiple domain hosting http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-email-hosting-multiple-domains.php http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-email-hosting-multiple-domains.php Mon, 28 Jun 2010 22:00:25 +0800 This is the new chapter how to install FREE and Easy Spam Solution - ESVA in 10 mins http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-installation.php http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/ESVA/centos-spam-mail-filter-ESVA-installation.php Sun, 27 Jun 2010 20:00:25 +0800 New Module added - Anti-Spam Solution on Centos Linux http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/centos-spam-mail-filter-solution.php http://www.1a-centosserver.com/centos-linux-anti-spam-email-filtering/centos-spam-mail-filter-solution.php Sat, 26 Jun 2010 22:00:25 +0800 The Step by step guide for installing JRE Java to your CentOS Linux http://www.1a-centosserver.com/Linux_clinic/centos-java-installation.php http://www.1a-centosserver.com/Linux_clinic/centos-java-installation.php Mon, 24 May 2010 22:00:25 +0800 In Part 6, we will show you how to verify the Postfix, Dovecot, Mysql, SMTP, POP3 connections. What are the common mistake that you will make during setup and some troublesooting tips http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part6.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part6.php Sun, 23 May 2010 12:00:25 +0800 In Part 5, we dicuss on the basic operation on how to create domains and users under PostfixAdmin http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part5.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part5.php Sun, 23 May 2010 12:00:25 +0800 In Part4, we dicuss how to install SquirrelMail that support multi domains http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part4.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part4.php Sun, 23 May 2010 12:00:25 +0800 This is topic we dicuss on PostfixAdmin Installation and common mistakes that users always make http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part3.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part3.php Sun, 23 May 2010 12:00:25 +0800 In Part 2, we dicuss how to create virtual user, customize the Postfix Main.cf and Dovecot.conf file. We also share how to create MySQLdb for Postfixadmin http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part2.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part2.php Sun, 23 May 2010 12:00:25 +0800 In part 1, we dicuss how to switch from default mail package , Sendmail to Postfix http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part1.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-postfix-postfixadmin-devocot-vmail-step-by-step-guide-part1.php Sun, 23 May 2010 12:00:25 +0800 This is the new module that dicuss on what CLI command to be used to obtain CentOS Linux System information http://www.1a-centosserver.com/centos-linux-system-information/know-your-centos-linux-system-information.php http://www.1a-centosserver.com/centos-linux-system-information/know-your-centos-linux-system-information.php Tue, 27 Apr 2010 00:05:25 +0800 This is and fast and easy guide for your daily file compression and archiving guide http://www.1a-centosserver.com/centos-compress-and-archives/centos-linux-compress-and-archive.php http://www.1a-centosserver.com/centos-compress-and-archives/centos-linux-compress-and-archive.php Wed, 21 Apr 2010 00:05:25 +0800 Practical guide on VI for Linux Administrator. http://www.1a-centosserver.com/centos-linux-vi-editor/centos-linux-vi-editor-edit-delete-save-undo.php http://www.1a-centosserver.com/centos-linux-vi-editor/centos-linux-vi-editor-edit-delete-save-undo.php Sun, 18 Apr 2010 23:05:25 +0800 We dicuss file, directory and text processing command for your daily Linux Adminsitration http://www.1a-centosserver.com/centos-managing-file-folder/centos-linux-managing-file-folder.php http://www.1a-centosserver.com/centos-managing-file-folder/centos-linux-managing-file-folder.php Sat, 17 Apr 2010 14:05:25 +0800 We dicuss on the possibility that causes the Telnet and FTP inital connection delay to CentOS / RHEL Server and solution to overcome the issue. http://www.1a-centosserver.com/Linux_clinic/Redhat-CentOS-Telnet-FTP-Slow-Delay-Solution.php http://www.1a-centosserver.com/Linux_clinic/Redhat-CentOS-Telnet-FTP-Slow-Delay-Solution.php Tue, 13 Apr 2010 13:05:25 +0800 Artica For Postfix provide you quick and easy installation method and web based interface for meassaging, vpn, file server and system administration http://www.1a-centosserver.com/centos-artica-messaging-server/centos-artica-mail-proxy-postfix-server.php http://www.1a-centosserver.com/centos-artica-messaging-server/centos-artica-mail-proxy-postfix-server.php Mon, 22 Mar 2010 20:05:25 +0800 iRedMail is another all-in-one mail package that will let you install a complete email solution. This simple upgrade guide for iRedAdmin-Pro installation from iRedAdmin Free Edition http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-installation-upgrade.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-iRedMail-iRedAdmin-installation-upgrade.php Wed, 17 Mar 2010 11:05:25 +0800 This is the step by step Qmail installation on CentOS Linux. This installation include the Qmail patching and changing default mailing system for Centos http://www.1a-centosserver.com/centos_linux_mail_server/centos-QMail-mail-server-installation.php http://www.1a-centosserver.com/centos_linux_mail_server/centos-QMail-mail-server-installation.php Wed, 17 Mar 2010 20:05:25 +0800 This is the MYSQL Database Replication with SSL Encryption guide contributed my Linus Shio. In his guide, he diccuss how to apply SSL encryption to replicate from Master to Slave MySQL host. Any changes on Master host will be replication to Slave host. This guide is indeed very useful if you have Master host at your HQ replicate to youe Slave host accross WAN link. This provide another layer of security other than merely rely on VPN http://www.1a-centosserver.com/Linux_Readers_Contributions/Centos-MySQL-Database-Replication-with-SSL-Encryption.php http://www.1a-centosserver.com/Linux_Readers_Contributions/Centos-MySQL-Database-Replication-with-SSL-Encryption.php Sat, 6 Mar 2010 15:05:25 +0800 This is the installation guide of OUVD - Session Manager Server on CentOS Linux http://www.1a-centosserver.com/centos_ulteo_open_virtual_desktop_uovd/OVD-Session-Manager-Server-Installation-Part1.php http://www.1a-centosserver.com/centos_ulteo_open_virtual_desktop_uovd/OVD-Session-Manager-Server-Installation-Part1.php Sun, 31 Jan 2010 15:00:25 +0800 In this guide we will dicuss how we solve the Kernel Panic issue after Clonezilla / VMWare Converter virtulization (especially in Software Raid) http://www.1a-centosserver.com/centos_redhat_vmware_virtualization/centos_linux_redhat_software_raid_vmware_vmconvertor_kernel_panic.php http://www.1a-centosserver.com/centos_redhat_vmware_virtualization/centos_linux_redhat_software_raid_vmware_vmconvertor_kernel_panic.php Fri, 22 Jan 2010 15:19:25 +0800 This is the CentOS and RedHat Virtualization Guide using Clonzilla, Part 2. We will migrate the Linux Clonezilla images from NFS Server to targeted VMWare Virtual Disk http://www.1a-centosserver.com/centos_redhat_vmware_virtualization/centos_linux_redhat_linux_restore_vmware_image_using_clonzilla_part2.php http://www.1a-centosserver.com/centos_redhat_vmware_virtualization/centos_linux_redhat_linux_restore_vmware_image_using_clonzilla_part2.php Fri, 22 Jan 2010 14:19:25 +0800 This is the CentOS and RedHat Virtualization Guide using Clonezilla, Part 1. We will dicussion how to partition the VMWare Virtual disk http://www.1a-centosserver.com/centos_redhat_vmware_virtualization/centos_linux_redhat_linux_restore_vmware_image_using_clonzilla_part1.php http://www.1a-centosserver.com/centos_redhat_vmware_virtualization/centos_linux_redhat_linux_restore_vmware_image_using_clonzilla_part1.php Fri, 22 Jan 2010 13:19:25 +0800 The Setup guide of Netpp Storage Simulator on CentOS 5.3 Linux guide. In this module, we are dicuss how to setup a cluster controller/ filers and activate both of the units in GUI mode http://www.1a-centosserver.com/centos_netapp_simulator/centos_netapp_simulator.php 4E001457-F222-49B4-984D-7FA78B6F10C5 Sun, 17 Jan 2010 14:13:25 +0800