Friday, 28 August 2015

Multiple SPF records for one domain

When creating SPF records, you must only create one per domain as per RFC 7208 which states the below in section 3:

"multiple SPF records are not permitted for the same owner name"

Read RFC 7208 here: https://tools.ietf.org/html/rfc7208#section-3.

If you have more than one server that sends email for a particular domain, you should merge the IPs into a single SPF record and not create more than one record. 

For more information on SPF records, see my two part article here.

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