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Posts Tagged ‘smtp

OS registers to DNS #security #risk

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Recently on NANOG I saw the item below, I was thinking about what this actually means. A computer would – similar to DynDNS – register itself and it’s hostname to a DNS server using some kind of authentication. Naturally I immediately thought this was a brilliant plan, and didn’t understand why nobody, with the exception of DynDNS, had thought of this before. The immediate afterthought was that this would be easy to implement with a soft-token, which is the software equivalent of a physical token like RSA’s SecureID, or complicated to implement with PKI infrastructure.

From: Mark Andrews <>
Re: mailing list bounces

It will be much better when the OS’s just register themselves in
the DNS. Humans shouldn’t have to do this when a machine renumbers.
Named can already authenticate PTR updates based on using TCP and
the source address of the update. For A/AAAA records you setup a
cryptographically strong authentication first.

DynDNS uses username password, which is less secure than the cryptographically strong solution that Mark Andrews mentions below.

Image source: Bill McCurdy

Written by Daniël W. Crompton (webhat)

March 8, 2011 at 4:56 pm

Posted in mail, pki, security

Tagged with , , , ,

This year’s articles about programming #2010

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Programming Hands

In 2010 I was less focussed on programming articles on the blog than previous years, still I have managed to create some interesting articles with code in 2010. This is an overview of the activity:

Having some fun today with QR codes, JavaScript and the Google Analytics URL …

The only questions that are asked in the Daily Scrum, aka Stand-Up, are: What…

UPDATE: GMail has introduced my number 3. YEAH! (Gmail introduces Priority In…

I like YouTube, and often subscribe to new channels and unsubscribe after a w…

Since I started working for my company I’ve been exposed to PCI DSS (Pa…

I don’t understand why url expansion after url shortening is such an is…

VeriSign – Personal Identity Portal is a OpenID provider with multiple …

Image source D’Arcy Norman

Fail whale solution for Twitter #failwhale @twitter

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Many years ago while working for a large ISP we had occasional outages due to bugging software or being over capacity. Mail was the biggest problem, with many people – even on the dial-up network – POP-ing[1] their mail every 5 minutes. We had rolled our own mailserver and we were constantly fixing our infrastructure to give our customers the highest quality. Yet we still had the occasional outage which caused our helpdesk to be flooded with calls from people whose mail client gave a pop-up message with an error message. Read the rest of this entry »

Written by Daniël W. Crompton (webhat)

July 2, 2010 at 5:51 pm

Posted in mail, social

Tagged with , , , ,

Features I Still Miss in Mail #mail #email

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UPDATE: GMail has introduced my number 3. YEAH! (Gmail introduces Priority Inbox: The importance filter for your email.)

With the exception of my happiness at some of the new features implemented by a few services – that are solutions to requirements I had in the past, and which are now integrated into my whole internet experience – there is seldom a week that goes by that I do not lament the limits of email.

Let me send customized mail to groups of people all at once.

Some time ago I wrote a tool which does this, it allows you to draft a mail and add on different messages/attachments for different people. And I don’t mean something as cumbersome as a Mail-Merge, I mean something that can be used for every message I send. People are already getting enough information they don’t need, with a little care from the sender a recipient’s load is minimized. Naturally you can still continue to work the way you did before, but for the people who want to lighten the mail burden they place on people it’s a handy tool. This includes the ability to send encrypted/signed messages to all the recipients based on the requirements of the sender and/or the recipient.

Let me initiate conversations with groups of people with just one tag.

Grouped mail exists already – it’s reasonably easily done with most mail clients, but what about tagged mailing. Three people in your addressbook are Java programmers, it would be handy to be able to mail only them your cool new code snippet rather than needing to go through the marketeers, managers and Perl programmers in your addressbook to find them. And without the need to update this list when a new contact is added, or an old one is removed.

has the ability to recognize that certain contacts are often contacted at the same time as others, although this is meant more to protect you from contacting the wrong Bob.[1] From experience I know that having multiple mail addresses for the same Bob screws with the algorithm. And this is based on the virtual grouping of mail history, rather than the taxonomy of the contact.

Let me queue up people who want to interact with me and work my way through the list in a way that works for both of us.

This is similar to an inbox for mail, although it is more efficiently ordered, perhaps implemented as a reversed spam filter, using either Bayesian or Markov filtering techniques to weight a message based on the inferred importance. The client allows you to assign weight to an email and you can ask the client to order all the messages by the weight you assigned to that email and similar messages, and all the previous messages you have weighted. It can also do this based on client side rules, and business rules and requirements. Interactions or interaction sessions could also be Timeboxed for greater efficiency.

  1. Got the wrong Bob?

What are your thoughts?

Adapted from post originally posted here.

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Written by Daniël W. Crompton (webhat)

June 10, 2010 at 6:32 am

Posted in mail, programming

Tagged with , ,

Email Should Change

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In another article New York Times examines Email, Lost in E-Mail, Tech Firms Face Self-Made Beast. A number of large companies have looked at the problem and what they’re proposing scares me:

A Google software engineer last week introduced E-Mail Addict, an experimental feature for the company’s e-mail service that lets people cut themselves off from their in-boxes for 15 minutes.

This scares me because this engineer thinks the solution to too much email is still to read it, just at a later time. There is so much mail send to some people that this just doesn’t work as a long term solution any more.

What is needed?

Read the rest of this entry »

Written by Daniël W. Crompton (webhat)

July 10, 2008 at 9:34 am

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