Normally for small businesses the MX records will be provided by your hosting service provider and you would only concern yourself with them if you change hosting provider. MX records are the names of the email servers that can receive email. Mx: This mechanism means all the MX records for the domain are tested to see if there is a match. They will have the server(s) IP address(es) in them) V=spf1: This means that the record is an SPF recordĪ: This mechanism means all the A records for the domain are tested to see if one matches (A records are ‘Address Records’ and they tell your domain what server to use. The server will read it from left to right, and each part of the code is referred to as a mechanism. A simple one could look like this: v=spf1 a mx include:_ include:_ ~all Breakdown of each part Well, it can look complicated if you’ve never seen one before. Then you simply type your domain into the box indicated and they will let you know what your SPF record is, and if it is valid. There are many great free tools online – type ‘SPF check’ into Google and you will see lots of companies providing a free version. Once upon a time Bob sends an email to Emily.Įmily’s server asks Bob’s server ‘What is your SPF?’īob’s server replies by sending the SPF record which contains the IP addresses of everyone that can send emails on his behalf.Įmily’s server says ‘Thanks, I can see you are allowed to send emails for Bob, I’ll put this email into her inbox’.Įmily receives the email from Bob in her inbox & is happy. Let’s explain this in plain English with a story: SPF (Sender Policy Framework) is simply a way to check if a particular IP address is authorised to send emails on your behalf. SPF will check to see if an IP address is allowed to send emails on your behalf And so, a number of different protections have been put in place to help authenticate emails, SPF Records being one of them. However, SMTP has no way to authenticate that an email has come from where it is saying it has come from. Put simply, SMTP moves your email from your email account to the recipient. Don’t be put off by the word ‘protocol’, this is simply a set of rules and guidelines that allow your computer to link up to other networks with the same rules & guidelines (the internet). Well, emails are sent by your Mail Transfer Agent (for example Outlook) through SMTP (Simple Mail Transfer Protocol).
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