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Office365

Supports SPF Supports DKIM

How to Enable SPF for Office 365

 

To utilize a custom domain, the Office 365 provider requires an SPF TXT record be added to the DNS record. This TXT record is then used by DNS to recognize email servers allowed to send messages on behalf of your custom/third-party domain. v=spf1 ~all

To set up your SPF record with Office 365 or edit your current SPF record to include Office 365, follow the steps below:

  1. Sign in to your domain account at your domain host
  2. Locate page for updating your domain’s DNS records (e.g., DNS Management, Name Server Management, Advanced Settings)
  3. Find your TXT records to check if you have an existing SPF record (record will start with v=spf1).
  • If you have an existing SPF record, follow the instructions below to update an existing SPF record with multiple mail servers.
    • In your existing SPF record, you will append include:spf.protection.outlook.com
    • For example, if your existing record looked like v=spf1; mx; ip4:1.2.3.4; you would add the above include as follows v=spf1; mx; ip4:1.2.3.4; include:spf.protection.outlook.com;
  • If you do not have an SPF record, Create a new TXT record with the following values:
    • In the Name/Host/Alias field, enter @ or leave blank (other DNS records might indicate which one you need)
    • In the Time to Live (TTL) field, enter 3600 or leave the default
    • In the Value/Answer/Destination field, enter: v=spf1; include:spf.protection.outlook.com ~all and Save the TXT record

 

How to Enable DKIM for Office 365

 

  1. Publish two CNAME records for your custom domain at DNS host using the following format:
    • Host name:        selector1._domainkey.<domain>
      Points to address or value:selector1-<domainGUID>._domainkey.<initialDomain> 
      TTL:            3600
    • Host name:        selector2._domainkey.<domain>
      Points to address or value:selector2-<domainGUID>._domainkey.<initialDomain> 
      TTL:            3600

       

DKIM/SPF Setup Highlights

The below sections highlight notable characteristics of setting up DKIM and SPF for this provider as well as highlighting advanced settings if offered by this Outbound Email Source.

SPF

SPF Include Tag Required

This outbound email provider uses an include mechanism to add this provider's IP space to your SPF. To get fully set up with SPF for this provider, you will need to take the provided “include” domain and add it to your SPF record. An example of an SPF record without an include tag is compared to one with the tag added below (the include tags added are denoted in bold).

 

Initial SPF Record:

HOST TEXT
yourdomain.com v=spf1 ~all

 

SPF record include added:

HOST TEXT
yourdomain.com v=spf1 include:sender.net include:new3rdparty.com ~all

 

This outbound email provider does not allow a custom Return-Path address to be set. 

DKIM

Supports DKIM Signing

Yes, this outbound email provider supports DKIM signing.

DKIM Setup via CNAME

This specific email provider relies on a CNAME record (or multiple records) for DKIM set up. Below is an example a typical  CNAME Record for setting up DKIM. The HOST section will typically contain a unique name followed by the domain name you are creating the record for (In the below "s1.domainkey" is the unique name followed by the domain of "yourdomain.com". The ADDRESS section will outline where mail receivers should look for a DKIM record for the domain. Both of these values are typically auto generated when you setup DKIM via an outbound email source.

HOST ADDRESS
s1.domainkey.yourdomain.com. s1.domainkey.uXXX.wlXXX.sendgrid.net.

 

No Custom DKIM records

This outbound email provider does not allow for any modification to the DKIM records they have provided to you.

DKIM Setup Process: Self-Service Dashboard

This email provider offers a self-service dashboard where DKIM records will be setup for the account. To get DKIM setup for this provider you will login to your account at this provider and proceed to the DKIM setup area.

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