What is SPF and SenderID?
|Time: 10 minutes|
|Suggested Skills: Email Deliverability, Network|
|Objective: The easiest way to make sure your message is authenticated to improve deliverability to the inbox is to have your network administrator update your organization's SPF record. For more information on SPF and SenderID, keep reading!|
SPF/SenderID Records Lookup for a Domain:
SPF looks at the domain in the Return-Path header.
This is always @emailcampaigns.net. Looking up @emailcampaigns.net on http://www.kitterman.com/spf/validate.html gives:
v=spf1 include: emailcampaigns.net
This says all of those IP's are allowed to send for @emailcampaigns.net. We have the records, so SPF will always pass for any email mail2 sends.
Sender-ID looks at the "Purported Responsible Address".
This boils down to the "From:" header or the "Sender:" header. mail2 does provide an option to "Authenticate This Message" which adds the "Sender:" header with a value of
This ensures the Sender-ID checks will pass. The side effect is that it creates the "on behalf of" in some email clients.
This makes sure that emailcampaigns.net is recognized as a valid sender on your network for your domain, and you no longer need to check the "Authenticate this email" box in the campaign creation process.