Fix indoor50.com Spam Issue

When I send regular one-to-one messages from my indoor50.com address through Microsoft 365/Outlook they drop straight into my customers’ spam folders. At the moment I am not even sure whether this affects every mailbox on the domain or just a single one, but the result is the same—important emails are being missed. I need someone who can quickly pinpoint the root cause and restore proper inbox delivery. That means checking DNS records (SPF, DKIM, DMARC), reputation listings, Microsoft 365 settings, and anything else that could be triggering filters. I will grant you access to the admin panels you request, run any tests you need, and provide sample headers from failed messages. Deliverables: • A clear diagnosis explaining why the emails are flagged as spam • Corrected or newly added DNS and Microsoft 365 settings applied to indoor50.com • Proof of improved deliverability using reputable testing tools or live inbox tests • A short hand-off document so I can keep the domain healthy going forward If this sounds straightforward to you and you have solved similar cases before, let’s get it fixed.