DNS records for your domain

Create these at whoever hosts your domain's DNS. We will give you the DKIM value, which is unique to your domain.

MX     @                 10 mail.totuldigital.ro
TXT    @                 v=spf1 mx -all
TXT    mail._domainkey   (we give you this value)
TXT    _dmarc            v=DMARC1; p=none; rua=mailto:postmaster@<your domain>

Start DMARC at p=none. It reports without rejecting, so you can see whether anything legitimate still sends as your domain before you tighten it to quarantine or reject.

Change the MX record last. Set up the mailboxes, prove a message arrives and prove one can be sent, and only then point the MX at us. Mail that arrives during a half-finished cutover is mail nobody has.