Sender Authentication

In my next few posts, I plan to write a series on Sender Authentication, specifically on SPF and a little bit on SenderID and possibly even DomainKeys.

To my more technically oriented readers, I apologize if this is familiar territory for you as I hate to bore you.  However, I do have other readers that are not quite as familiar with these methods and would like to get a basic understanding of them.  In addition, because of the shift in the industry to tend towards sender-authentication, I think it makes sense to write about it.  After all, nothing grounds your knowledge in a subject better than teaching it.

My plan is to go over the basics of email headers, email envelopes and SPF records.  Then, I will go over how SFP and SenderID attempt to identify illegitimate senders using these records and how spam filters can use them to their advantage.

There are quite a number of resources on the web that already deal with the subject. I have read a lot of them in order to get my own understanding up to speed.  I plan to do my best to provide a nice overview of the entire subject.

Comments (2)
  1. How many parts should we expect in this series? just the four you have so far? or are there more?

  2. tzink says:

    There will be between 8-10 posts.  I haven’t pre-written them, I add more as I go along.

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