Category Archive: Technology

Aug 02 2013

Nexus 7

android

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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Jun 13 2013

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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Jun 04 2013

Responsive Web Design

Responsive iPhone

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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Jun 01 2013

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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Apr 13 2013

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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Mar 27 2013

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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Mar 27 2013

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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Dec 04 2012

Flight Status, Siri?

2012-12-03 17.07.34

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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Nov 20 2012

whois

Here’s a tip for internet domain owners: Make sure the contact information for your domain has more than one email address.  And make sure at least one of those email addresses is not in the domain itself. If your email starts malfunctioning, you want people to be able to tell you about the problem … …

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Nov 15 2012

Adding Envelope Sender in sendmail

Fair warning: This post is pretty darn technical and is of little interest to people who don’t muck around with Linux and/or mail servers. Recently I had a problem with someone on a midrange.com mailing list where they sent obvious spam. The problem was, they were a subscriber to the list and had posted before …

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