Spam filter fails for particular group/domain

[Joostgrunwald]

Our spam filters are failing for the group (PII Removed by Staff), we can send email spoofed mails and known spam mails here without action/banners/interception. For other accounts and groups, spam filtering works properly. We checked if spam handling was enabled for this group and it was. We also checked the gmail/safety group spam setting. Spam filters are enabled for all groups and spam messages are properly remediated.

I do not why spam comes trough?

Could it be SPF/DKIM related?

Yours sincerely,

Joost Grunwald, (PII Removed by Staff)

[CloudGuardians]

HI Joos,

This is too little information to allow for proper troubleshooting, and leaves a lot of room for guessing.

If you want, you can send me some message headers and relevant screenshots (everything sanitized, to exclude/hide private information). You can use joos.spam@cloudguardians.com (this is a temporary email, valid for 7 days).