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Add Domain to Resend

First, login to your Resend Account and add a domain.

It is best practice to use a subdomain (updates.example.com) instead of the root domain (example.com). This allows for proper reputation segmentation based on topics or purpose (e.g. transactional and marketing).

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Login to Gandi

Login to your Gandi account:

  1. Choose your Domain from the Domain list.
  2. Select the DNS Resends tab to get to the page to manage DNS records.

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Add MX SPF Record

Select “Add record” on Gandi to copy and paste the values MX from Resend.

  1. On the Type page, choose MX.
  2. Use the default TTL of 10800.
  3. Type send for the Name of the record.
  4. Use the default Priority of 10.
  5. Copy the MX Value from Resend into the Hostname field.
  6. Select Create.

Gandi requires your MX record to have a trailing period when adding. Resend will include the trailing period when copying. Removing the period will cause the verification to fail.

Below is a mapping of the record fields from Resend to Gandi:

GandiResendExample Value
TypeTypeMX Record
NameNamesend
HostnameValuefeedback-smtp.us-east-1.amazonses.com.
TTL-10800
PriorityPriority10

Do not use the same priority for multiple records. If Priority 10 is already in use on another record, try a number slightly higher like 11 or 12.

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Add TXT SPF Record

In the same section, select “Add record” again.

  1. On the Type page, choose TXT.
  2. Use the default TTL of 10800.
  3. Type send for the Name of the record.
  4. Copy the TXT Value Resend into the Text value field.
  5. Select Create.

Omit your domain from the record values in Resend when you paste. Instead of send.example.com, paste only send (or send.subdomain if you’re using a subdomain).

Below is a mapping of the record fields from Resend to Gandi:

GandiResendExample Value
TypeTypeTXT Record
NameNamesend
Text valueValue"v=spf1 include:amazonses.com ~all"
TTL-10800

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Add TXT DKIM Records

In the same section, select “Add record” again.

  1. On the Type page, choose TXT.
  2. Use the default TTL of 10800.
  3. Type resend._domainkey for the Host name of the record.
  4. Copy the record value from Resend into the TXT value field.
  5. Select Create.

Omit your domain from the record values in Resend when you paste. Instead of resend._domainkey.example.com, paste only resend._domainkey (or resend._domainkey.subdomain if you’re using a subdomain).

Below is a mapping of the record fields from Resend to Gandi:

GandiResendExample Value
TypeTypeTXT Record
NameNamesend
Text valueValuep=MIGfMA0GCSqGSIbRL/a21QojogA+rYqIQXB/3DQEBDAQAB
TTL-1 hour

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Complete Verification

Now click Verify DNS Records on your Domain in Resend. It may take a few hours to complete the verification process (often much faster).

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Troubleshooting

If your domain is not successfully verified, these are some common troubleshooting methods.