v=DMARC1;p=quarantine;sp=none;adkim=r;aspf=r;pct=100;fo=1;rf=afrf;ri=86400;rua=mailto:email@yourdomain.com;ruf=mailto:email@yourdomain.com
The DMARC entry is a recommendation provided to the receiving server on how to handle email received from Per's mail server that doesn't satisfy SPF and DKIM security checks. Per's entry is communicating "relaxed/none" policies (i.e., don't reject/quarantine, no actions to be taken), so I don't see his DMARC record getting in the way of delivering his mail.
Per is using a third party's mail server to host his domain and his SPF record seemed okay for that purpose, but I can't see his DKIM record. If he doesn't have a DKIM record set up, he likely can identify the means to have the mail server generate a secure public key for his domain which he will need to use to create his DNS DKIM record.
I host my own mail server, and after 18 years, I recently moved DNS from my ISP to a different DNS services provider which required me to brush up on creating DNS records. My ISP managed my DNS entries and it was nearly impossible to talk to anyone who could make needed changes. My new DNS services provider has now provided me full access to set up and manage DNS. Unfortunately, I still need to work with my ISP to manage my reverse DNS entries.