Posts Tagged ‘howto’

DKIM and DomainKeys for qmail

March 19th, 2009

DomainKeys and its successor DomainKeys Identified Mail (DKIM) are technologies that allow organizations to take responsibility for a message. This is done by cryptographically signing an email as it leaves an organization in route to its destination. The signature can be verified using the DNS system to establish trust. In theory the technologies help cut down on spam by proving a message originated from the domain it says it does.

Support for DomainKeys in qmail has existed for a while thanks to a patch by Russel Nelson. Kyle Wheeler created a set of wrapper scripts that can be used to provide support for DKIM and DomainKeys. Mihai Secasiu has some wrapper scripts similar to Kyle’s that provide support for DKIM via the libdkim library instead of Perl’s Mail::DKIM module.

Server Admin , , , ,

Installing Gentoo 2008.0 amd64 on a Linode VPS

February 9th, 2009

Today I signed up for a Linode VPS. Linode appeared to have great reviews and very reasonable prices. I had originally looked at Host Virtual, primarily because they are planning to offer native ipv6 (something I’ve been wanting to play with) later this month.  I ended up with Linode because they have a Dallas datacenter which makes my connections from Austin pretty fast.

One advantage that Host Virtual provided was a more recent Gentoo image.  Linode only offers a Gentoo 2007.0 install, which it doesn’t even list as a current distribution.  No worries, in this post I describe the steps I took to install a fresh Gentoo 2008.0 amd64 image on my new Linode!

Update: On April 4 2009, Linode released a Gentoo 2008.0 x86_64 image, which somewhat obsoletes this post. I haven’t tried it, but if your looking to try 64-bit Gentoo on a Linode, try that image instead of these instructions.

Before we get started, some of the things I wanted on my system:

Gentoo , , ,