The Sender Policy Framework (SPF) is an open standard specifying a technical method to prevent sender address forgery. More precisely, the current version of SPF — called SPFv1 or SPF Classic — protects the envelope sender address, which is used for the delivery of messages. See the box on the right for a quick explanation of the different types of sender addresses in e-mails.
For more information, visit the site http://www.open-spf.org/.
Relaying outbound email via IIG servers
In order to relay mail via our servers, you will need to include the follow details in your domain's SPF record:
A complete record would then appear as:
example.com.au. 3600 IN TXT "v=spf1 ip4:192.0.2.100 include:spf.iig.com.au -all"