Month: July 2015
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Hardening Postfix
While there are plenty of good (and not so good) anti-spam solutions available, most of them cost a bit of money in terms of purchasing and licensing fees. Even without a dedicated appliance, there are several ways you can harden the Postfix MTA against spam and other internet nasties. In this article, we’re going to…
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Require TLS for certain domains in Postfix
Recently, I was asked if it was possible to require Transport Layer Security (TLS) for sending email for certain domains, through a specific relay. For added complexity, the list of domains would need to be updated daily. Of course it’s possible, I said. And yes, Postfix is up to the challenge. Here’s how to require…
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Skies have cleared
It appears that we’re being spared any extreme weather here in the area. The evening skies are beginning to clear. Which is good.
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Discovery: Fish live beneath Antarctica
Scientists find translucent fish in a wedge of water hidden under 740 meters of ice, 850 kilometers from sunlight Source: Discovery: Fish Live beneath Antarctica An absolutely astonishing find from the web edition of Scientific American. In what has to be one of the most remote and extreme locations on Earth, scientists have not only…
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Why I’m Not A Christian | Tim Stepping Out
I love reading about other people who have gone through a process of careful consideration, doubt, reasoning and then ultimately arrive at the conclusion that religion is inconsistent and therefore unbelievable. This is a long but well-reasoned post exploring the many inconsistencies in the Christian faith. Well worth a read! Source: Why I’m Not A…