Sysadmin

Postfix, Cyrus, Web-Cyradm on Ubuntu Mail Server Setup Guide Postfix SMTP and Cyrus IMAP/POP3 are highly efficient open source server packages with extensive production burn in. Add the excellent open source anti spam and anti virus tools, SpamAssassin & ClamAV, along with the Web-Cyradm for a half-decent domain+account control panel, and you get a production quality mail server competitive in most ways with top commercial offerings.

However, though the individual packages install and work, considerable tweaking is required to get the whole installation working smoothly together. Herein is a how-to for Ubuntu 8.04 server edition. (8 pages)
» Postfix, Cyrus, Web-Cyradm on Ubuntu: Mail Server Setup Guide
» DNS Preliminaries
» Ubuntu Install
» Postfix & Cyrus Install (4)
» Web-Cyradm Install (2)
» Anti-Spam & Anti-Virus Install
» Lockdown
» More

	How To Build a Vhosted Linux Development Server on Windows using VirtualBox - I've been doing a fair bit of PHP and Python on Linux recently. My favorite PHP editor, PhpEd is Windows only. However, I prefer to develop LAMP code on LAMP. Here's a solution: Linux on VirtualBox, networked to the host Windows OS. Commented on Jan. 20, 1 link, 5 comments In Jul. 2009 | Week of 08/03/09
	Better Broadband Bandwidth Utilization Using Wondershaper on a Linux Router to Limit the Uplink - Since I did some streaming video experiments in the early years of this century I've known that maxing both directions of an internet connection kills throughput. I did some experiments, initially to improve my SIP Phone performance (when my son is playing online games, TBH) and came up with a "low-hanging fruit" solution. Icon set on Aug. 6 2009, 6 links In Jul. 2009 | Week of 08/03/09
	Convert a .crt Certificate to a .pem file - Every year or so I update CA'd certs and usually forget that my mailserver (cyrus+postfix) needs a PEM format file. Then, I have to fish around for the openssl commands that do the job. Page published on Apr. 22 2009, 1 link In Mar. 2009 | Week of 04/20/09
	VirtualBox for Ubuntu on Vista 64 (The VMWare Killer for Developer VMs?) - Ok, that's an overstatement. I used VMWare Workstation successfully for a year to develop for Win2k web servers on my XP desktop. However, when I needed an Ubuntu guest on Windows Vista host (for Python/TurboGears dev), VMWare got ugly with various host apps. I searched...and I found...VirtualBox. This doc is a loose how-to, because some steps were poorly documented. Page published on Feb. 13 2009, 2 links In Jan. 2009 | Week of 02/09/09
	The Internet Server Project - Part I - Intro - Back in '99 I was determined to get out of semiconductor CAD software and into this wizzy Internet stuff. Probably the smartest thing I did back then was to build (and rebuild and rebuild) a web+email server for my own domain. Page edited on Feb. 8 2008, 3 links In Jan. 2008 | Week of 02/04/08
	Postfix + Cyrus Imap - A Quick & Easy Setup for Suse 10.1 and The *non-MySQL* Case - In the past (Suse < 9) I've always had to build postfix and cyrus from scratch to get them to work together (could be my problem, I admit). In Suse 10.1 I've finally gotten them to work from the distro, with a few bits of config hacking, for local passwd users (no mysql based accounts in this config.) Page published on Sep. 2 2007 In May 2006 | Week of 06/12/06
	BitDefender install script hangs on ftp call - When running the BitDefender install script, wget tries passive ftp and hangs. Here is a way to force wget to not use ftp passive. Page published on Sep. 2 2007, 1 link In Jan. 2006 | Week of 02/06/06
	Suse 10.0 Internet Install - DISCLAIMER DISCLAIMER: Ok, this seems to be the way to go. I don't know how far back this was supported, but if installing 10.x, try it out. DISCLAIMER: This note needs a rewrite because there's an easier way. I'm hoping this still works under 10.1, too, as I haven't checked it. You may want to check http://opensuse.us/viewtopic.php?t=149 for a 10.1 specific how-to. Page edited on Sep. 2 2007, 2 links In Nov. 2005 | Sep. 2007 | Week of 09/03/07
	How To change the mysql root password (or any mysql password) - Ever inherit a mysql server that no one knew the root password, or perhaps any of the passwords? Page published on Sep. 2 2007 In Dec. 2005 | Sep. 2007 | Week of 01/02/06
	The Internet Server Project - Part II - Planning - Let's break down the top level parts for the project... Page edited on Feb. 8 2008, 7 links In Jan. 2008 | Week of 02/04/08
	The Internet Server Project - Part III - Do It and Test It Page edited on Feb. 8 2008, 4 links In Jan. 2008 | Week of 02/04/08
	The Internet Server Project - Part IV - DNS, WWW, Mail & Other Projects Page edited on Feb. 8 2008, 4 links In Jan. 2008 | Week of 02/04/08

Post a page · Create a poll