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Add your records at OVHcloud

When OVHcloud runs your domain's DNS.

Add the records

  1. In the Control Panel, go to Web Cloud, then Domain names. Select the domain and open the DNS zone tab.
  2. Remove OVHcloud's own mail records with ⋮ > Edit the entry or delete: the MX records mx0 to mx4.mail.ovh.net, and the SPF record with include:mx.ovh.com. Otherwise mail goes to either provider at random.
  3. Select Add an entry, choose the type, and fill in the subdomain and target from your domain's page. Leave the subdomain empty for the domain itself.
  4. End the MX and CNAME targets with a dot, such as mx1.postpike.net., or OVHcloud adds your own domain to them.
A TXT entry holds 255 characters, and the DKIM key is longer. Add that one in text mode instead, under Actions on my zone > Edit in text mode.

From OVHcloud: editing a DNS zone, OVHcloud: MX records. Menus change: if something here doesn't match what you see, tell us.