Authentication of email

By APSIS

2011-06-13

Authentication means that ISP gets the possibility to in fact verify who is the sender of an email. That´s a big progress. In a world there unwanted mass emails and other spam takes more and more time from the average user, can this type of solutions mean important steps on the way to decreases the problem.

Authentication perhaps sounds like a complicated and technical word. But it should interest even you who a responsible for the marketing and don´t types code. Both emailmarketers and ISP agrees that authentication is an important step in work to reduce the amounts of unwanted emails, like spam.

E-mail which which ain´t authenticated will have a hgher risk to be trapped in the emailservers spamfilter or end up directly in the wastebin. And if this happends with your mailings it´s not your technicians which will be blamed, rather you which are responsible for the investments in marketing whic gives value.

What does this mean, ok, authentication is really not much more complicated than that the ISP get´s a possiblity to verify who is the sender of an email through your IP-adress. This is commonly setup to block emails, which trys to use your identity, high jack your server or IP-address to send the emails.

In other words, it´s not that complicated. The questions is rather if you have give the issue enough focus. But on the otherside it´s very easy to find out. Because if you already use authentication today, you probably use some of following protocol:

• “Sender ID Framework”: means that Hotmail add a warning to each email which doesn´t use authorization and tell the receiver that they can´t identify the sender, “Sender is unknown”. This technology is developed by Microsoft and just recently free for use which means that we expect the use of this will increase rapidly.

• “Sender Policy Framework (SPF)”: SPF is a solution which is developed from an open-source project, to be integrated in several big solutions, like AOL and Googles Gmail. SPF is also integrated in the latest version of the popular contentfilter SpamAssassin.

• “DomainKeys Identified Mail”: This is a process developed by Yahoo! and is built around a small encrypted key which is added to the header of the email, and that way ensure that the reciever can verify the sender.

With all problems an emailuser gets around spam in mind, it´s difficult to find disadvantages in working the authentication. Instead there is several advantages:

So let us finish with the 5 most important advantages with authentication:

1. Many big ISP filters and blocks e-mail just because they aren´t authenicated

2. You can use several types of authentication without any problems. If You do it the right way
the authencation can´t harm your emaildeliveries.

3. The cost to handle the authentication is nothing or atleast very low

4. Authentication is import to build a good reputation for you as a sender.

5. Through authentication you gets a possibility to get you an advantage compared to your competitor
which don´t do it yet.

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