Best Practice: How to Authenticate your Email Domain

By authenticating your email address, Internet Service Providers (ISPs) can easily identify the sender of the email, and make a decision about the delivery of the email.

The majority of email senders will have their domain authenticated, and this is seen as best practices amongst the email industry. Spammers are continually improving their spamming and phishing methods, and will often veil their email under a well-known brand.

By pretending to be well-known brands, phishers are tricking your customers into revealing passwords and account information for their own financial gain.

Email authentication is a ‘must-do’ for legitimate organisations that are sending a lot of emails, and rely on getting them delivered. It’s also a must for those companies who are looking to protect their online reputation and maintain customer trust.

Authentication can be tricky, due to the technological knowledge behind it – and the hundreds of acronyms that are associated with it.

Here are 5 ways to authenticate your emails:

1. Authenticate using SPF and DMARC

These two protocols have become the industry standard when authenticating an email address. If an address is not SPF authenticated, ISPs are likely to assume it is not properly authenticated and may reject the email.

2. Create a list of all possible IP addresses

To authenticate your email you will need a list of all possible IP address that may be used when sending email. Do this to reduce the risk of your mail being blocked by ISPs at the gateway.

3. Create your record on SPF and publish it

Every protocol has a slightly different process so you will need to do your research before you sign up to anything.

4. Test your records

Simply enter your domain into a testing tool, such as the Policy Record Tester, to check the verification of any existing domains.

Find more articles on this subject here, in our Knowledge Base.

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