Microsoft dkim wizard

DomainKeys Identified Mail DKIM defines a domain-level digital signature authentication framework for email by permitting a signing domain to assert responsibility for a message in transit. DKIM authenticates the reputation and identity of the email sender and their email signing practices for additional handling i. This tool tests the ability to retrieve the DKIM public key using a domain and a selector. For example, if you organization sends emails from such an email address: [email protected] , enter example.

I am going to show you exactly how to do this in SendGrid now:. I will show you how to do this in GoDaddy step by step:. Log in to GoDaddy. Click the domain in question, then click the DNS button. Otherwise edit it instead. Enter s1. For more information about domains, see Domains FAQ. DKIM lets you add a digital signature to outbound email messages in the message header. When you configure DKIM, you authorize your domain to associate, or sign, its name to an email message using cryptographic authentication.

Email systems that get email from your domain can use this digital signature to help verify whether incoming email is legitimate. In basic, a private key encrypts the header in a domain's outgoing email. The public key is published in the domain's DNS records, and receiving servers can use that key to decode the signature. DKIM verification helps the receiving servers confirm the mail is really coming from your domain and not someone spoofing your domain. You can choose to do nothing about DKIM for your custom domain too.

If you don't set up DKIM for your custom domain, Microsoft creates a private and public key pair, enables DKIM signing, and then configures the Microsoft default policy for your custom domain. Microsoft's built-in DKIM configuration is sufficient coverage for most customers. However, you should manually configure DKIM for your custom domain in the following circumstances:. When you forward a message, portions of that message's envelope can be stripped away by the forwarding server.

Since the digital signature stays with the email message because it's part of the email header, DKIM works even when a message has been forwarded as shown in the following example. In this example, if you had only published an SPF TXT record for your domain, the recipient's mail server could have marked your email as spam and generated a false positive result. The addition of DKIM in this scenario reduces false positive spam reporting.

DKIM uses a private key to insert an encrypted signature into the message headers. If the message is verified, the DKIM check passes. If you do not see it, add your accepted domain from domains page.

Once your domain is added, follow the steps as shown below to configure DKIM. Make sure that the fields are set to the following values for each:. Microsoft automatically sets up DKIM for onmicrosoft.

No steps are needed to use DKIM for any initial domain names like litware. Since both and bitness are supported for DKIM keys, these directions will tell you how to upgrade your bit key to in Exchange Online PowerShell. The steps below are for two use-cases, please choose the one that best fits your configuration.

When you already have DKIM configured , you rotate bitness by running the following command:. Stay connected to Exchange Online PowerShell to verify the configuration by running the following command:. This new bit key takes effect on the RotateOnDate, and will send emails with the bit key in the interim.

After four days, you can test again with the bit key that is, once the rotation takes effect to the second selector. If you want to rotate to the second selector, after four days and confirming that bitness is in use, manually rotate the second selector key by using the appropriate cmdlet listed above. If you haven't read the full article, you may have missed this time-saving PowerShell connection information: Connect to Exchange Online PowerShell. If you have provisioned custom domains in addition to the initial domain in Microsoft , you must publish two CNAME records for each additional domain.

Instead of looking up the MX record for your initialDomain to calculate customDomainIdentifier , instead we calculate it directly from the customized domain.