All emails from Hosted Exchange to O365 Marked as Spam

Hello, we are having an issue that seems as though it relatively common, but yet unresolved, where all email from our IP/domain is going to users junk folder.

Below is an example header set, and can clearly see:

• SPF passes
• DKIM passes
• PTR passes
• A domain/IP blacklist check (from available sources) passes

Can someone please assist in this? It is having a sever negative affect on our org.

Message Id <email address removed for privacy reasons>



Authentication-Results spf=pass (sender IP is xxx) smtp.mailfrom=xxx.org; dkim=pass (signature was verified) header.d=xxx.org;dmarc=pass action=none header.from=xxx.org;compauth=pass reason=100



Spam rules (13230031)(451199024)(3480700007)(86362001)(7636003)(7596003)(356005)(6916009)(8676002)(36756003)(5660300002)(7116003)(1096003)(108616005)(24736004)(53546011)(26005)(2616005)(336012)(20270200004)

Source header CIP:23.244.32.230;CTRY:US;LANG:en;SCL:5;SRV:;IPV:NLI;SFV:SPM;H:mail.xxx.org;PTR:mail.xxx.org;CAT:SPM;SFS:(13230031)(451199024)(3480700007)(86362001)(7636003)(7596003)(356005)(6916009)(8676002)(36756003)(5660300002)(7116003)(1096003)(108616005)(24736004)(53546011)(26005)(2616005)(336012)(20270200004);DIR:INB;