SPF Record: Difference between revisions

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<indicator name="Faults">[[File:Menu-email.svg|link=:Category:Email|30px|Back up to the Email Category]]</indicator>

Also see [[DKIM]]

SPF = Sender Policy Framework

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Many of the large email providers (Gmail, Yahoo, Office 365) are getting picky about accepting email that has no 'validation' mechanisms. Even if your email is not spam or junk they may treat it as so and either reject the message or put it in the recipients junk folder.

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However, customers can add a SPF record to their domain to help get their messages through. In short, an SPF record says which email servers are allowed to send messages from you.

Whilst we don't provide DMARK or DKIM features on our email service customers are are welcome to use their own email servers and configure them as they wish.

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Typically, our customers would use <code>smtp.aa.net.uk</code> to send email - however '''thought must be given to other servers that may also send email from your domain - eg you may have a 3rd party web server or some other service that sends email on our behalf - these would want to be included too.''' In these cases, you'd add the IP addresses as: ip4:x.x.x.x and/or ip6:xxxx:xxxx:xxxx::xxxx

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However, customers ~~may be able to~~ add a SPF record to their domain to help get their messages through. In short, an SPF record says which email servers are allowed to send messages from you.

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Typically, our customers would use <code>smtp.aa.net.uk</code> to send email - however thought must be given to other servers that may also send email from your domain - eg you may have a 3rd party web server or some other service that sends email on our behalf - these would want to be included too.

To cover the IP addresses of the A&A email servers, you can include <code>_spf_include.aa.net.uk</code>, eg:

v=spf1 mx include:_spf_include.aa.net.uk ~all

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This says to accept email from the mx records (<code>mx</code>) and A&A's published list of IP addresses (<code>include:_spf_include.aa.net.uk</code>) , everything else should be marked as possible junk (<code>~al</code>).

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This says to accept email from the mx records (<code>mx</code>) and A&A's published list of IP addresses (<code>include:_spf_include.aa.net.uk</code>) , everything else should be marked as possible junk (<code>~all</code>). This should be added as a domain level TXT record (Typically "@" through a control panel).

This is just a brief example of SPF, the record above will be useful to customers who only send email via <code>smtp.aa.net.uk</code>. There are lots of information and SPF 'generators' on the internet. The main thing to do is to test what you have added by looking at the headers of email that has been received by Gmail/O365 etc)

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[[Category:Email]]

[[Category:Email Features]]

[[Category:Email How to]]