sendmail DNSSEC HOWTO ===================== (Version 0.1) Introduction ============ This HOWTO describes the installation, configuration and execution steps for adding DNSSEC validation to outbound email for sendmail. This patch has been tested for sendmail 8.14.1. Installation ============ Download sendmail-8.14.x.tar.gz from ftp://ftp.sendmail.org/pub/sendmail/. Unzip and untar it by: tar -xvzf sendmail-8.14.x.tar.gz Go to the sendmail-8.14.x directory: cd sendmail-8.14.x Apply the sendmail-8.14.x_dnssec_patch.txt patch found in this directory by: patch -p 0 -b -z .orig