This guide explains how to add or modify a DKIM record in a DNS zone (domain/subdomain) managed on the Manager Infomaniak.

Preamble

• The DKIM (Domain Keys Identified Mail) record type is a protocol that allows emails to be signed when sent and ensures optimal operation of your Infomaniak mail service.
• This ensures that the content of emails is not modified during transit and that they originate from the sender's domain.
  • This standard thus prevents spammers from impersonating legitimate entities.
• DKIM will fail if it detects that a message has been modified and that unauthorized changes have been made to theFromof the message.
• The DKIM standard is enabled for all Infomaniak customers with a Mail Service whose domain/subdomain has its DNS zone managed by Infomaniak.
  • All emails sent from the app Mail or your choice of email software/client are therefore automatically signed.

Check the DKIM record

The Global Security tool allows you to easily check and correct certain problematic records.

And when your domain is managed elsewhere, you will find the DKIM record to add in the DNS zone:

Manually modify the DNS zone (not recommended)

Refer to this other guide to manage this type of record in a DNS zone.

Add multiple DKIMs

You can have multiple DKIM records on your domain/subdomain without limit, unlike DMARC or SPF, as long as your DNS host allows it.

If you use multiple third-party email providers, for example the ERP Odoo, it is necessary to add a DKIM for Odoo in addition to Infomaniak's.

Use unique DKIM selectors to avoid conflicts with existing records.