Category: Technology

Amazon Lightsail

Ha! I’ll be you thought this blog was dead. Well, truth be told, it was pretty close … but you never know when inspiration will strike. So a little while ago I had a hardware failure on one my servers. This incident has given me the incentive to try and move some of the servers …

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Mailbait Threats

Back in October of 2012 I devised a way of blocking abuse of my mailing list server by detecting mailbait abusers (mailbait.info offers a ‘service’ to fill your, or someone else, mailbox with unwanted mailing list subscriptions). In June of 2013 I refined the technique. Basically I detected if someone was visiting the mailing list …

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Nexus 7

Yesterday I bought a new tablet … the Google Nexus 7. Initially I liked it … it had a nice form factor, it’s light, has a nice display, and a powerful CPU. I played around with it yesterday and today … but  I’ve decided that I’m going to return it. My intention was to use …

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mailbait redux

For anyone who runs a mailing list and has gotten pummeled recently with a rash of subscription attempts, they may be coming from mailbait.info. A while ago I blogged on how to block mailbait, but it appears they have changed their host. Their new host is ‘themailbait.bitbucket.org’. I suggest you update your web server configuration …

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Responsive Web Design

As part of my fundraising effort for the Tour de Cure, I registered the domain “ridewithdavid.com”. I wanted an easy to remember domain that I could use as a portal to the fundraising page that the ADA provided. So I created a basic web page that would redirect the visitor to my fundraising page after …

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WordPress Under Attack

If you run a wordpress blog, you really should  be aware that there is a global attack on wordpress blogs going on. It’s coming from a bot net and is an attempt to find blogs that have their admin account enabled with easy to guess passwords. I noticed the attack a couple of months ago …

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Yahoo SMTP Deferrals Take 2

Well, our good friends at Yahoo are at it again. Once again they are deferring mail for no apparent reason. Nothing has changed on my system and yet they haven’t accepted a message to deliver to one of their users in 3 days (maybe more).  And, of course, there’s no way to actually contact a …

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Abuse Addresses

Most ISP’s and network providers have specific email addresses that you can report abuse to. These addresses can be looked up using a whois tool. Recently, I’ve noticed a number of those addresses that just don’t work the way they are supposed to.

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Tech Tip: Don’t use qmail as a mail server

A while ago I added a new anti-spam technique to my mail server setup called “No Listing”. No listing basically means putting a high priority MX record in the DNS that always rejects mail server connections.. It seems, however, that the qmail mail server can’t cope with that.  It’s not RFC compliant.

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Flight Status, Siri?

OK, I admit it … I kind of like Siri on my iPhone. Some of the features are darn right useful … being able to tell the phone to remind me about something based on location, get the current weather, send a text message by voice, etc. Recently I found a case that Siri seems …

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