Category Archives: How Tos

How to update qmail relay rules

Posted on August 20, 2008 by admin

D. J. Bernstein’s Qmail, now in the public domain, is a powerful yet clumsy SMTP messaging system. One of the most common problems is updating the rules for allowing SMTP relay, or denying the same. If you qmail-smtpd under tcpserver, … Continue reading →

Posted in Email Servers, How Tos, qmail | Leave a comment

perl howto push a hash onto an array

Posted on August 12, 2008 by admin

This could also be called how to make an arrays of hashes. The basic idea is to create a list of items that when iterated, returns individual hashes. use Data::Dumper; my @array; push @array, {‘key1’ => ‘value1’, ‘key2’ => ‘value2’}; … Continue reading →

Posted in How Tos, perl, Programming | 2 Comments

calculate server btu output

Posted on July 28, 2008 by admin

This post was updated on 8/29/2008 to clarify a few things This is a heavily viewed page. Please leave me a comment if this was helpful or if something is missing or confusing.  I would like it to be more … Continue reading →

Posted in How Tos | Tagged , , | 18 Comments