Here, the receiving server will look at the email header for ' Mail From' portion extract the domain from name here and validate the SPF record published for this domain. Those companies with mail servers which are enabled to do a SPF lookup for all received mails will validate the authenticity of the sender by doing a reverselookupįor spf record of sender domain. SPF uses a DNS TXT record to provide a list of authorized sending IP addresses for a given domain. Let us try to understand how each of these work and later move on to implementing DKIM same in Office 365. With time passingĭMAC and DKIM are the new two features introduced to validate the authenticity of the sender. Most of us knows SPF records are considered criticalĪnd highly recommended to prevent any spoofing and phishing attack in the name of your organization, however there are many organizations which have not enabled SPF lookup for inbound mails to validate if the mail came from a legitimate source. Send yourself a test email from Outlook on the web and respond to it from Outlook 2013.Before we start with this topic I would like to explain the existing methodologies used to prevent spoofing and phishing, these two together cause a great threat to almost all organizations around the world.Once Outlook is done configuring your account, select Finish.

On the Auto Account Setup page, enter the following:.In the dropdown list, choose the new profile name.Select Always use this profile to set the new profile as the default.From the Start Menu, open your Control Panel.Microsoft ended support for Outlook 2013 (versions prior to. Note: Make sure you're using the most recent version of Outlook. Alternatively, if you have a Business Professional or Premium Security plan, you can download the most recent version of Outlook. We recommend setting up your Outlook automatically using the Outlook Setup Assistant. Add my Microsoft 365 email address to Outlook 2013 (Windows)Īfter you've set up your Microsoft 365 email address, you can add it to Outlook 2013 for Windows.

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