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Setting up a postfix fallback MX

These are some short stepts and pointers to setup a postfix fallback MX. It does not describe postfix basics, nor how to install Mailscanner (a necessisity, because spammers like sending spam to fallback MX's because they're usually not as well protected). Read More »

Postfix queue: sender and recipient address

I always seem to forget this, and the mailq command is not clear, so here it is: when you type mailq on a postfix server, the first address listed is the sender, the second the recipient. Read More »

Adding SPF support to Postfix

(Hmm, this suggests the python version might be better). Read More »

Tracking Xen domU’s with munin

To view statistics of your xen server with Munin (source): Read More »

Getting a better MySQL prompt

When you want to see which user you are and which database you're working with, put this in .my.cnf: prompt=(\\u@\\h) [\\d]>\\_ Read More »

Sending yourself a test virus

I found this handy little site to send yourself a harmless test virus. Read More »

Installing a commercial SSL certificate in Zimbra

I installed a commercial (free) SSL certificate from Startcom SSL in Zimbra. I basically followed this, except the java keytool thing. I don't know why that is necessary... I did this on Zimbra 6.0.10_GA_2692.UBUNTU8_64 UBUNTU8_64 FOSS edition. Read More »

Installing Munin-node on a Debian or Ubuntu machine

If you want to gather statistics on a machine with a Munin server, install munin node: aptitude -P install munin-node munin-plugins-extra Read More »

Fixing locale message in Ubuntu when logging in or SCPing

I've encountered this error occasionally when loggin in: -bash: warning: setlocale: LC_ALL: cannot change locale (nl_NL.UTF-8) Read More »

Getting a Xen hvc0 on a stock Ubuntu

When you install Ubuntu in Xen with xen-create-image, the console is automatically handled. If you want to add a console to a stock-installed Ubuntu, add this file to /etc/init and call it hvc0.conf: Read More »