SPF Alignment - What it means for improving DMARC

Quoted on this wiki

Every place a page here uses this source, in the order the words come in it.

1. “These two headers are evaluated during SPF validation testing, at which point the server that received the email will compare two headers in the email, which are:” The <From:> domain

   In Email authentication testing

2. The <From:> domain “The RFC5321.MailFrom/Return Path domain” To better understand how SPF alignment works, let’s examine its makeup. Two types of alignment tests exist. One is based on SPF, and one is based on DKIM. The Alignment test for SPF is performed in order to verify the authenticity of the domain sending the email by using two header signatures in the message where the sender's domain is present. This is done as part of the DMARC standard, as the <From:> domain can be easily spoofed by fraudsters and used to trick people into opening malicious emails and clicking malicious links.

   In Email authentication testing