Dev Notes

Various Cheat Sheets and Resources by David Egan/Carawebs.

Set Up SPF Records


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David Egan

Publishing a Sender Policy Framework (SPF) Record in your domain’s DNS specifies which server IP addresses are allowed to send emails from your domain.

Having a properly set up SPF record makes it less likely that outgoing mail will be tagged as spam.

Return as a TXT Record

Although it appears that best practice is to publish SPF records via DNS as both a SPF and TXT record, the DNS management utilities for some hosts only provide for the addition of txt records

For a good description of SPF as TXT records, see here.

SPF Generators

From the MS Generator: v=spf1 a mx ip4:123.45.678.90 mx:mail.yourdomain.com -all

Add text record with -all amended to ~all, which allows a ‘soft fail’:

v=spf1 a mx ip4:123.45.678.90 mx:mail.yourdomain.com ~all

This assumes that there is also an mx record for a mailserver for the domain in question.

Check SPF Record

Use this tool to check SPF records on your domain.

Resources


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