Email arriving to spam on Outlook; ok on Gmail

Hello,

I’m having some email issues with Outlook, my emails are arriving to the spam folder. They arrive ok to Gmail/Workspace.

For background:

1- I’m using mail.baby relay
2- SPF records are setup

@ TXT “v=spf1 a mx include:spf-c.mailbaby.net _all”

3- DMARC records are setup

_dmarc TXT "v=DMARC1; p=reject"

4- mail-tester.com is giving me a 10/10 score

Any ideas on if I’m missing something or what else I could try or check would be greatly appreciated. Thank you in advance.