Remote server returned '554 5.0.0 - Other mail system problem 550 DKIM

Question

Hello, we have difficulties receiving emails sent by people with a Microsoft 365 environment.

They all get bounced by our server, it is only for emails coming from a ****.onmicrosoft.com domain:

Example:

Remote server returned '554 5.0.0 <[75.98.162.129] #5.0.0 smtp; 5.3.0 - Other mail system problem 550-'DKIM: encountered the following problem validating denhaag.onmicrosoft.com:\nbodyhash_mismatch' (delivery attempts: 0)>'

What is the cause of this?

our DNS entries:

v=DMARC1; p=quarantine; pct=100; rua=mailto:******@steezdistribution.com; sp=quarantine;adkim=r; aspf=r; rf=afrf

v=spf1 +mx +a +ip4:75.98.162.129 +ip4:75.98.162.138 include:servers.mcsv.net include:_spf.mx.cloudflare.net include:_spf.google.com ~all

Is this something on the send end that is causing this?

Is there a solution on our end to combat this?

Kind regards and thanks in advance.

Martijn