Archive

Posts Tagged ‘DKIM’

Gentoo ebuild for qmail with JMS1 combined patch

April 16th, 2009

In a previous post, I introduced a patch to add DKIM and DomainKeys support to Qmail with John Simpson’s combined patch. In this post I’ll introduce the ebuild I wrote (well, modified) to allow easily installing qmail-jms1 on a Gentoo system.

Though this ebuild makes installing qmail with John’s patch a little easier, it doesn’t make administering a qmail system child’s play. Before merging this ebuild, you should read through John’s website. You may also want to read about netqmail on Gentoo. While this ebuild has nothing to do with netqmail, it does borrow some the conventions presented in the Gentoo doc concerning starting, stopping and controlling qmail.

I didn’t include any of John’s run scripts or configuration files. Only the combined patch is applied to the base qmail image. I’ve also included some additional patches I’ve found useful. They are described in more detail on my qmail patches page. Most of my extra patches are controlled by use flags (dkim, ipv6) and not applied by default.

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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.

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