Adding DKIM and Return-Path records to Gandi

To add TXT records for DKIM to your Gandi hosted domain check out this helpful how-to video and follow the steps below.

Obtain the DKIM record from Postmark

Log into Postmark and navigate to the Sender Signatures section. Click Add a DKIM DNS Record or DNS Settings for the domain you are adding DKIM for.

You will then see entries for both DKIM and Return-Path:

These records will be used once you login to Gandi, so keep the DNS Settings window or tab open in your browser.

Adding the DKIM and Return-Path Records to Gandi

1. Log in to Gandi, click on the Domains tab in the lefthand toolbar, and click on the domain in question.
2. Click DNS Records tab.
3. Click the Add to add a new record. We will start with adding the CNAME record.
4. We will start by adding the CNAME record. For the Type, select CNAME from the drop-down.
5. You can generally leave the TTL as it is.
6. In the Name field, enter the Hostname value for the Return-Path record from the DNS Settings page in Postmark and in the Hostname field enter pm.mtasv.net. and then click Create.
   Note that you’ll want to put a dot (.) at the end of the “pm.mtasv.net” value
7. Click Add again to add another record for DKIM. For the Type, select TXT from the drop-down.
8. In the Name field, enter the Hostname value you see for DKIM in your domain’s DNS Settings page in Postmark. It will be in the format of 2020040212345pm._domainkey. Then in the Text Value field, enter the TXT value for the DKIM record from your DNS Settings page in Postmark. Click Create.
   
9. To finish verifying the CNAME and DKIM records, click on the Verify button in the Postmark DNS Settings page next to the DKIM and Return-Path records.
   

If everything is propagated (which can take up to 48 hours for new DNS records) and working, you will see a green checkmark in your Sender Signatures page showing that the domain has been verified. You can now also send from any email address on that domain.