Low DKIM aligned percentage

DMARK Management is showing

If I run a test at Mail-Tester the only thing this flags is Your IP address 40.107.121.119 is associated with the domain mail-cwxgbr01on2119.outbound.protection.outlook.com.
Nevertheless your message appears to be sent from GBR01-CWX-obe.outbound.protection.outlook.com.

You may want to change your pointer (PTR type) DNS record and the host name of your server to the same value.

Here are the tested values for this check:

Where should I look next as to the cause of the low DKIM aligned score?

Welcome to the Cloudflare Community :logodrop:

Don’t get lured off track by the mention of PTR records. They have nothing to do with DKIM.

Check your Cloudflare DNS to ensure that you have the required CNAMEs for Microsoft 365 DKIM and confirm that they are :grey: DNS Only.

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